Release FreeBSD 1.0upstream/1.0.0_cvsrelease/1.0.0_cvs

This commit was manufactured to restore the state of the 1.0-RELEASE image.
Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

41 files changed, 6580 insertions, 0 deletions

diff --git a/lib/libc/net/Makefile.inc b/lib/libc/net/Makefile.inc
new file mode 100644
index 000000000000..23b89e27eb7b
--- /dev/null
+++ b/lib/libc/net/Makefile.inc
@@ -0,0 +1,46 @@
+#	@(#)Makefile.inc	5.3 (Berkeley) 2/21/91
+
+# net sources
+.PATH: ${.CURDIR}/${MACHINE}/net ${.CURDIR}/net
+
+SRCS+=	gethostnamadr.c getnetbyaddr.c getnetbyname.c getnetent.c \
+	getproto.c getprotoent.c getprotoname.c getservbyname.c \
+	getservbyport.c getservent.c herror.c inet_addr.c inet_lnaof.c \
+	inet_makeaddr.c inet_netof.c inet_network.c inet_ntoa.c \
+	iso_addr.c linkaddr.c ns_addr.c ns_ntoa.c rcmd.c recv.c res_comp.c \
+	res_debug.c res_init.c res_mkquery.c res_query.c res_send.c \
+	send.c sethostent.c
+
+.if   (${MACHINE} == "hp300")
+SRCS+=	htonl.s htons.s ntohl.s ntohs.s
+.elif (${MACHINE} == "i386")
+SRCS+=	htonl.s htons.s ntohl.s ntohs.s
+.elif (${MACHINE} == "tahoe")
+SRCS+=	htonl.s htons.s ntohl.s ntohs.s
+.elif (${MACHINE} == "vax")
+SRCS+=	htonl.s htons.s ntohl.s ntohs.s
+.endif
+
+MAN3+=	net/byteorder.3 net/gethostbyname.3 net/getnetent.3 net/getprotoent.3 \
+	net/getservent.3 net/inet.3 net/ns.3 net/rcmd.3 net/resolver.3
+
+MLINKS+=byteorder.3 htonl.3 byteorder.3 htons.3 byteorder.3 ntohl.3 \
+	byteorder.3 ntohs.3
+MLINKS+=gethostbyname.3 endhostent.3 gethostbyname.3 gethostbyaddr.3 \
+	gethostbyname.3 sethostent.3 gethostbyname.3 gethostent.3 \
+	gethostbyname.3 herror.3
+MLINKS+=getnetent.3 endnetent.3 getnetent.3 getnetbyaddr.3 \
+	getnetent.3 getnetbyname.3 getnetent.3 setnetent.3
+MLINKS+=getprotoent.3 endprotoent.3 getprotoent.3 getprotobyname.3 \
+	getprotoent.3 getprotobynumber.3 getprotoent.3 setprotoent.3
+MLINKS+=getservent.3 endservent.3 getservent.3 getservbyname.3 \
+	getservent.3 getservbyport.3 getservent.3 setservent.3
+MLINKS+=inet.3 addr.3 inet.3 inet_addr.3 inet.3 inet_lnaof.3 \
+	inet.3 inet_makeaddr.3 inet.3 inet_netof.3 inet.3 inet_network.3 \
+	inet.3 inet_ntoa.3 inet.3 network.3 inet.3 ntoa.3 \
+	inet.3 inet_aton.3
+MLINKS+=ns.3 ns_addr.3 ns.3 ns_ntoa.3
+MLINKS+=rcmd.3 rresvport.3 rcmd.3 ruserok.3
+MLINKS+=resolver.3 dn_comp.3 resolver.3 dn_expand.3 resolver.3 res_init.3 \
+	resolver.3 res_mkquery.3 resolver.3 res_send.3 resolver.3 res_query.3 \
+	resolver.3 res_search.3
diff --git a/lib/libc/net/byteorder.3 b/lib/libc/net/byteorder.3
new file mode 100644
index 000000000000..3d0f99e0cac6
--- /dev/null
+++ b/lib/libc/net/byteorder.3
@@ -0,0 +1,76 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)byteorder.3	6.7 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt BYTEORDER 3
+.Os BSD 4.2
+.Sh NAME
+.Nm htonl ,
+.Nm htons ,
+.Nm ntohl ,
+.Nm ntohs
+.Nd convert values between host and network byte order
+.Sh SYNOPSIS
+.Fd #include <sys/param.h>
+.Ft u_long
+.Fn htonl "u_long hostlong"
+.Ft u_short
+.Fn htons "u_short hostshort"
+.Ft u_long
+.Fn ntohl "u_long netlong"
+.Ft u_short
+.Fn ntohs "u_short netshort"
+.Sh DESCRIPTION
+These routines convert 16 and 32 bit quantities between network
+byte order and host byte order.
+On machines which have a byte order which is the same as the network
+order, routines are defined as null macros.
+.Pp
+These routines are most often used in conjunction with Internet
+addresses and ports as returned by
+.Xr gethostbyname 3
+and
+.Xr getservent 3 .
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr getservent 3
+.Sh HISTORY
+The
+.Nm byteorder
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+On the
+.Tn VAX
+bytes are handled backwards from most everyone else in
+the world.  This is not expected to be fixed in the near future.
diff --git a/lib/libc/net/gethostbyname.3 b/lib/libc/net/gethostbyname.3
new file mode 100644
index 000000000000..61d1017166b5
--- /dev/null
+++ b/lib/libc/net/gethostbyname.3
@@ -0,0 +1,246 @@
+.\" Copyright (c) 1983, 1987, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)gethostbyname.3	6.14 (Berkeley) 7/31/91
+.\"
+.Dd July 31, 1991
+.Dt GETHOSTBYNAME 3
+.Os BSD 4.2
+.Sh NAME
+.Nm gethostbyname ,
+.Nm gethostbyaddr ,
+.Nm gethostent ,
+.Nm sethostent ,
+.Nm endhostent ,
+.Nm herror
+.Nd get network host entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Fd extern struct h_errno;
+.Ft struct hostent *
+.Fn gethostbyname "char *name"
+.Ft struct hostent *
+.Fn gethostbyaddr "char *addr" "int len" "int type"
+.Ft struct hostent *
+.Fn gethostent void
+.Fn sethostent "int stayopen"
+.Fn endhostent void
+.Fn herror "char *string"
+.Sh DESCRIPTION
+The
+.Fn gethostbyname
+and
+.Fn gethostbyaddr
+functions
+each return a pointer to an object with the
+following structure describing an internet host
+referenced by name or by address, respectively.
+This structure contains either the information obtained from the name server,
+.Xr named 8 ,
+or broken-out fields from a line in 
+.Pa /etc/hosts .
+If the local name server is not running these routines do a lookup in
+.Pa /etc/hosts .
+.Bd -literal
+struct	hostent {
+	char	*h_name;	/* official name of host */
+	char	**h_aliases;	/* alias list */
+	int	h_addrtype;	/* host address type */
+	int	h_length;	/* length of address */
+	char	**h_addr_list;	/* list of addresses from name server */
+};
+#define	h_addr  h_addr_list[0]	/* address, for backward compatibility */
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width h_addr_list
+.It Fa h_name
+Official name of the host.
+.It Fa h_aliases
+A zero terminated array of alternate names for the host.
+.It Fa h_addrtype
+The type of address being returned; currently always
+.Dv AF_INET .
+.It Fa h_length
+The length, in bytes, of the address.
+.It Fa h_addr_list
+A zero terminated array of network addresses for the host.
+Host addresses are returned in network byte order.
+.It Fa h_addr
+The first address in
+.Fa h_addr_list ;
+this is for backward compatiblity.
+.Pp
+When using the nameserver,
+.Fn gethostbyname
+will search for the named host in the current domain and its parents
+unless the name ends in a dot.
+If the name contains no dot, and if the environment variable
+.Dq Ev HOSTALIASES
+contains the name of an alias file, the alias file will first be searched
+for an alias matching the input name.
+See
+.Xr hostname 7
+for the domain search procedure and the alias file format.
+.Pp
+The
+.Fn sethostent
+function
+may be used to request the use of a connected
+.Tn TCP
+socket for queries.
+If the
+.Fa stayopen
+flag is non-zero,
+this sets the option to send all queries to the name server using
+.Tn TCP
+and to retain the connection after each call to 
+.Fn gethostbyname
+or
+.Fn gethostbyaddr .
+Otherwise, queries are performed using
+.Tn UDP
+datagrams.
+.Pp
+The
+.Fn endhostent
+function
+closes the
+.Tn TCP
+connection.
+.Sh FILES
+.Bl -tag -width /etc/hosts -compact
+.It Pa /etc/hosts
+.El
+.Sh DIAGNOSTICS
+Error return status from 
+.Fn gethostbyname
+and
+.Fn gethostbyaddr
+is indicated by return of a null pointer.
+The external integer
+.Va h_errno
+may then be checked to see whether this is a temporary failure
+or an invalid or unknown host.
+The routine
+.Fn herror
+can be used to print an error message describing the failure.
+If its argument
+.Fa string
+is
+.Pf non Dv -NULL ,
+it is printed, followed by a colon and a space.
+The error message is printed with a trailing newline.
+.Pp
+The variable
+.Va h_errno
+can have the following values:
+.Bl -tag -width HOST_NOT_FOUND
+.It Dv HOST_NOT_FOUND
+No such host is known.
+.It Dv TRY_AGAIN
+This is usually a temporary error
+and means that the local server did not receive
+a response from an authoritative server.
+A retry at some later time may succeed.
+.It Dv NO_RECOVERY
+Some unexpected server failure was encountered.
+This is a non-recoverable error.
+.It Dv NO_DATA
+The requested name is valid but does not have an IP address; 
+this is not a temporary error.  
+This means that the name is known to the name server but there is no address
+associated with this name.
+Another type of request to the name server using this domain name
+will result in an answer;
+for example, a mail-forwarder may be registered for this domain.
+.El
+.Sh SEE ALSO
+.Xr resolver 3 ,
+.Xr hosts 5 ,
+.Xr hostname 7 ,
+.Xr named 8
+.Sh CAVEAT
+The
+.Fn gethostent
+function
+is defined, and
+.Fn sethostent
+and
+.Fn endhostent
+are redefined,
+when
+.Xr libc 3
+is built to use only the routines to lookup in
+.Pa /etc/hosts
+and not the name server.
+.Pp
+The
+.Fn gethostent
+function
+reads the next line of
+.Pa /etc/hosts ,
+opening the file if necessary.
+.Pp
+The
+.Fn sethostent
+function
+is redefined to open and rewind the file.  If the
+.Fa stayopen
+argument is non-zero,
+the hosts data base will not be closed after each call to
+.Fn gethostbyname
+or
+.Fn gethostbyaddr .
+The
+.Fn endhostent
+function
+is redefined to close the file.
+.Sh HISTORY
+The
+.Fn herror
+function appeared in 
+.Bx 4.3 .
+The
+.Fn endhostent ,
+.Fn gethostbyaddr ,
+.Fn gethostbyname ,
+.Fn gethostent ,
+and
+.Fn sethostent
+functions appeared in
+.Bx 4.2 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Only the Internet
+address format is currently understood.
diff --git a/lib/libc/net/gethostnamadr.c b/lib/libc/net/gethostnamadr.c
new file mode 100644
index 000000000000..2b1597a20796
--- /dev/null
+++ b/lib/libc/net/gethostnamadr.c
@@ -0,0 +1,577 @@
+/*
+ * Copyright (c) 1985, 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)gethostnamadr.c	6.48 (Berkeley) 1/10/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+#define	MAXADDRS	35
+
+#define _PATH_HOSTCONF	"/etc/host.conf"
+
+#define SERVICE_NONE	0
+#define SERVICE_BIND	1
+#define SERVICE_HOSTS	2
+#define SERVICE_NIS	3
+#define SERVICE_MAX	3
+
+static int service_order[SERVICE_MAX + 1];
+static int service_done = 0;
+
+
+static char *h_addr_ptrs[MAXADDRS + 1];
+
+static struct hostent host;
+static char *host_aliases[MAXALIASES];
+static char hostbuf[BUFSIZ+1];
+static struct in_addr host_addr;
+static FILE *hostf = NULL;
+static char hostaddr[MAXADDRS];
+static char *host_addrs[2];
+static int stayopen = 0;
+char *strpbrk();
+struct hostent *_getnishost();
+
+#if PACKETSZ > 1024
+#define	MAXPACKET	PACKETSZ
+#else
+#define	MAXPACKET	1024
+#endif
+
+typedef union {
+    HEADER hdr;
+    u_char buf[MAXPACKET];
+} querybuf;
+
+typedef union {
+    long al;
+    char ac;
+} align;
+
+int h_errno;
+extern errno;
+
+static void
+init_services()
+{
+	char *cp, buf[BUFSIZ];
+	register int cc = 0;
+	FILE *fd;
+
+	if ((fd = (FILE *)fopen(_PATH_HOSTCONF, "r")) == NULL) {
+				/* make some assumptions */
+		service_order[0] = SERVICE_BIND;
+		service_order[1] = SERVICE_HOSTS;
+		service_order[2] = SERVICE_NONE;
+	} else {
+		while (fgets(buf, BUFSIZ, fd) != NULL && cc < SERVICE_MAX) {
+			if ((cp = rindex(buf, '\n')) != NULL)
+				*cp = '\0';
+			if (buf[0] == '#')
+				continue;
+			if (!strcmp(buf, "bind"))
+				service_order[cc++] = SERVICE_BIND;
+			else if (!strcmp(buf, "hosts"))
+				service_order[cc++] = SERVICE_HOSTS;
+			else if (!strcmp(buf, "nis"))
+				service_order[cc++] = SERVICE_NIS;
+		}
+		service_order[cc] = SERVICE_NONE;
+	}
+	service_done = 1;
+}
+
+static struct hostent *
+getanswer(answer, anslen, iquery)
+	querybuf *answer;
+	int anslen;
+	int iquery;
+{
+	register HEADER *hp;
+	register u_char *cp;
+	register int n;
+	u_char *eom;
+	char *bp, **ap;
+	int type, class, buflen, ancount, qdcount;
+	int haveanswer, getclass = C_ANY;
+	char **hap;
+
+	eom = answer->buf + anslen;
+	/*
+	 * find first satisfactory answer
+	 */
+	hp = &answer->hdr;
+	ancount = ntohs(hp->ancount);
+	qdcount = ntohs(hp->qdcount);
+	bp = hostbuf;
+	buflen = sizeof(hostbuf);
+	cp = answer->buf + sizeof(HEADER);
+	if (qdcount) {
+		if (iquery) {
+			if ((n = dn_expand((u_char *)answer->buf,
+			    (u_char *)eom, (u_char *)cp, (u_char *)bp,
+			    buflen)) < 0) {
+				h_errno = NO_RECOVERY;
+				return ((struct hostent *) NULL);
+			}
+			cp += n + QFIXEDSZ;
+			host.h_name = bp;
+			n = strlen(bp) + 1;
+			bp += n;
+			buflen -= n;
+		} else
+			cp += __dn_skipname(cp, eom) + QFIXEDSZ;
+		while (--qdcount > 0)
+			cp += __dn_skipname(cp, eom) + QFIXEDSZ;
+	} else if (iquery) {
+		if (hp->aa)
+			h_errno = HOST_NOT_FOUND;
+		else
+			h_errno = TRY_AGAIN;
+		return ((struct hostent *) NULL);
+	}
+	ap = host_aliases;
+	*ap = NULL;
+	host.h_aliases = host_aliases;
+	hap = h_addr_ptrs;
+	*hap = NULL;
+#if BSD >= 43 || defined(h_addr)	/* new-style hostent structure */
+	host.h_addr_list = h_addr_ptrs;
+#endif
+	haveanswer = 0;
+	while (--ancount >= 0 && cp < eom) {
+		if ((n = dn_expand((u_char *)answer->buf, (u_char *)eom,
+		    (u_char *)cp, (u_char *)bp, buflen)) < 0)
+			break;
+		cp += n;
+		type = _getshort(cp);
+ 		cp += sizeof(u_short);
+		class = _getshort(cp);
+ 		cp += sizeof(u_short) + sizeof(u_long);
+		n = _getshort(cp);
+		cp += sizeof(u_short);
+		if (type == T_CNAME) {
+			cp += n;
+			if (ap >= &host_aliases[MAXALIASES-1])
+				continue;
+			*ap++ = bp;
+			n = strlen(bp) + 1;
+			bp += n;
+			buflen -= n;
+			continue;
+		}
+		if (iquery && type == T_PTR) {
+			if ((n = dn_expand((u_char *)answer->buf,
+			    (u_char *)eom, (u_char *)cp, (u_char *)bp,
+			    buflen)) < 0)
+				break;
+			cp += n;
+			host.h_name = bp;
+			return(&host);
+		}
+		if (iquery || type != T_A)  {
+#ifdef DEBUG
+			if (_res.options & RES_DEBUG)
+				printf("unexpected answer type %d, size %d\n",
+					type, n);
+#endif
+			cp += n;
+			continue;
+		}
+		if (haveanswer) {
+			if (n != host.h_length) {
+				cp += n;
+				continue;
+			}
+			if (class != getclass) {
+				cp += n;
+				continue;
+			}
+		} else {
+			host.h_length = n;
+			getclass = class;
+			host.h_addrtype = (class == C_IN) ? AF_INET : AF_UNSPEC;
+			if (!iquery) {
+				host.h_name = bp;
+				bp += strlen(bp) + 1;
+			}
+		}
+
+		bp += sizeof(align) - ((u_long)bp % sizeof(align));
+
+		if (bp + n >= &hostbuf[sizeof(hostbuf)]) {
+#ifdef DEBUG
+			if (_res.options & RES_DEBUG)
+				printf("size (%d) too big\n", n);
+#endif
+			break;
+		}
+		bcopy(cp, *hap++ = bp, n);
+		bp +=n;
+		cp += n;
+		haveanswer++;
+	}
+	if (haveanswer) {
+		*ap = NULL;
+#if BSD >= 43 || defined(h_addr)	/* new-style hostent structure */
+		*hap = NULL;
+#else
+		host.h_addr = h_addr_ptrs[0];
+#endif
+		return (&host);
+	} else {
+		h_errno = TRY_AGAIN;
+		return ((struct hostent *) NULL);
+	}
+}
+
+struct hostent *
+gethostbyname(name)
+	const char *name;
+{
+	querybuf buf;
+	register int cc;
+	register const char *cp;
+	register struct hostent *hp;
+	int n;
+	extern struct hostent *_gethtbyname();
+
+	/*
+	 * disallow names consisting only of digits/dots, unless
+	 * they end in a dot.
+	 */
+	if (isdigit(name[0]))
+		for (cp = name;; ++cp) {
+			if (!*cp) {
+				if (*--cp == '.')
+					break;
+				/*
+				 * All-numeric, no dot at the end.
+				 * Fake up a hostent as if we'd actually
+				 * done a lookup.
+				 */
+				if (!inet_aton(name, &host_addr)) {
+					h_errno = HOST_NOT_FOUND;
+					return((struct hostent *) NULL);
+				}
+				host.h_name = (char *)name;
+				host.h_aliases = host_aliases;
+				host_aliases[0] = NULL;
+				host.h_addrtype = AF_INET;
+				host.h_length = sizeof(u_long);
+				h_addr_ptrs[0] = (char *)&host_addr;
+				h_addr_ptrs[1] = (char *)0;
+#if BSD >= 43 || defined(h_addr)	/* new-style hostent structure */
+				host.h_addr_list = h_addr_ptrs;
+#else
+				host.h_addr = h_addr_ptrs[0];
+#endif
+				return (&host);
+			}
+			if (!isdigit(*cp) && *cp != '.') 
+				break;
+		}
+
+	if (!service_done)
+		init_services();
+
+	for (cc = 0; service_order[cc] != SERVICE_NONE &&
+	     cc <= SERVICE_MAX; cc++) {
+		switch (service_order[cc]) {
+		case SERVICE_BIND:
+			if ((n = res_search(name, C_IN, T_A,
+					    buf.buf, sizeof(buf))) < 0) {
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					printf("res_search failed\n");
+#endif
+			}
+			hp = getanswer(&buf, n, 0);
+			if (hp)
+				return hp;
+			break;
+		case SERVICE_HOSTS:
+			hp = _gethtbyname(name);
+			if (hp)
+				return hp;
+			break;
+		case SERVICE_NIS:
+			hp = _getnishost(name, "hosts.byname");
+			if (hp)
+				return hp;
+			break;
+		}
+	}
+	return ((struct hostent *) NULL);
+}
+
+struct hostent *
+gethostbyaddr(addr, len, type)
+	const char *addr;
+	int len, type;
+{
+	int n;
+	register int cc;
+	querybuf buf;
+	register struct hostent *hp;
+	char qbuf[MAXDNAME];
+	extern struct hostent *_gethtbyaddr();
+	
+	if (type != AF_INET)
+		return ((struct hostent *) NULL);
+	(void)sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
+		((unsigned)addr[3] & 0xff),
+		((unsigned)addr[2] & 0xff),
+		((unsigned)addr[1] & 0xff),
+		((unsigned)addr[0] & 0xff));
+		if (!service_done)
+	  init_services();
+
+	cc = 0;
+	while (service_order[cc] != SERVICE_NONE) {
+	        switch (service_order[cc]) {
+		case SERVICE_BIND:
+			(void)sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
+				      ((unsigned)addr[3] & 0xff),
+				      ((unsigned)addr[2] & 0xff),
+				      ((unsigned)addr[1] & 0xff),
+				      ((unsigned)addr[0] & 0xff));
+			n = res_query(qbuf, C_IN, T_PTR, (char *)&buf,
+				      sizeof(buf));
+			if (n < 0) {
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					printf("res_query failed\n");
+#endif
+				break;
+			}
+			hp = getanswer(&buf, n, 1);
+			if (hp) {
+				hp->h_addrtype = type;
+				hp->h_length = len;
+				h_addr_ptrs[0] = (char *)&host_addr;
+				h_addr_ptrs[1] = (char *)0;
+				host_addr = *(struct in_addr *)addr;
+#if BSD < 43 && !defined(h_addr)	/* new-style hostent structure */
+				hp->h_addr = h_addr_ptrs[0];
+#endif
+				return(hp);
+			}
+			break;
+		case SERVICE_HOSTS:
+			hp = _gethtbyaddr(addr, len, type);
+			if (hp)
+				return hp;
+			break;
+		case SERVICE_NIS:
+			hp = _getnishost(addr, "hosts.byaddr");
+			if (hp)
+				return hp;
+			break;
+		}
+		cc++;
+	}
+	return ((struct hostent *)NULL);
+}
+
+_sethtent(f)
+	int f;
+{
+	if (hostf == NULL)
+		hostf = fopen(_PATH_HOSTS, "r" );
+	else
+		rewind(hostf);
+	stayopen |= f;
+}
+
+_endhtent()
+{
+	if (hostf && !stayopen) {
+		(void) fclose(hostf);
+		hostf = NULL;
+	}
+}
+
+struct hostent *
+_gethtent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (hostf == NULL && (hostf = fopen(_PATH_HOSTS, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(hostbuf, BUFSIZ, hostf)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	/* THIS STUFF IS INTERNET SPECIFIC */
+#if BSD >= 43 || defined(h_addr)	/* new-style hostent structure */
+	host.h_addr_list = host_addrs;
+#endif
+	host.h_addr = hostaddr;
+	*((u_long *)host.h_addr) = inet_addr(p);
+	host.h_length = sizeof (u_long);
+	host.h_addrtype = AF_INET;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	host.h_name = cp;
+	q = host.h_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL) 
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&host);
+}
+
+struct hostent *
+_gethtbyname(name)
+	char *name;
+{
+	register struct hostent *p;
+	register char **cp;
+	
+	_sethtent(0);
+	while (p = _gethtent()) {
+		if (strcasecmp(p->h_name, name) == 0)
+			break;
+		for (cp = p->h_aliases; *cp != 0; cp++)
+			if (strcasecmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	_endhtent();
+	return (p);
+}
+
+struct hostent *
+_gethtbyaddr(addr, len, type)
+	const char *addr;
+	int len, type;
+{
+	register struct hostent *p;
+
+	_sethtent(0);
+	while (p = _gethtent())
+		if (p->h_addrtype == type && !bcmp(p->h_addr, addr, len))
+			break;
+	_endhtent();
+	return (p);
+}
+
+struct hostent *
+_getnishost(name, map)
+	char *name, *map;
+{
+	register char *cp, *dp, **q;
+	char *result;
+	int resultlen;
+	struct hostent h;
+	static char *domain = (char *)NULL;
+
+	if (domain == (char *)NULL)
+#ifdef YP
+		if (yp_get_default_domain (&domain))
+#endif
+			return ((struct hostent *)NULL);
+
+#ifdef YP
+	if (yp_match(domain, map, name, strlen(name), &result, &resultlen))
+		return ((struct hostent *)NULL);
+#endif
+
+	if (cp = index(result, '\n'))
+		*cp = '\0';
+
+	cp = strpbrk(result, " \t");
+	*cp++ = '\0';
+#if BSD >= 43 || defined(h_addr)	/* new-style hostent structure */
+	h.h_addr_list = host_addrs;
+#endif
+	h.h_addr = hostaddr;
+	*((u_long *)h.h_addr) = inet_addr(result);
+	h.h_length = sizeof(u_long);
+	h.h_addrtype = AF_INET;
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	h.h_name = cp;
+	q = h.h_aliases = host_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &host_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&h);
+}
diff --git a/lib/libc/net/getnetbyaddr.c b/lib/libc/net/getnetbyaddr.c
new file mode 100644
index 000000000000..58bf79efac65
--- /dev/null
+++ b/lib/libc/net/getnetbyaddr.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetbyaddr.c	5.7 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+
+extern int _net_stayopen;
+
+struct netent *
+getnetbyaddr(net, type)
+	register long net;
+	register int type;
+{
+	register struct netent *p;
+
+	setnetent(_net_stayopen);
+	while (p = getnetent())
+		if (p->n_addrtype == type && p->n_net == net)
+			break;
+	if (!_net_stayopen)
+		endnetent();
+	return (p);
+}
diff --git a/lib/libc/net/getnetbyname.c b/lib/libc/net/getnetbyname.c
new file mode 100644
index 000000000000..dd4755a98eea
--- /dev/null
+++ b/lib/libc/net/getnetbyname.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetbyname.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _net_stayopen;
+
+struct netent *
+getnetbyname(name)
+	register const char *name;
+{
+	register struct netent *p;
+	register char **cp;
+
+	setnetent(_net_stayopen);
+	while (p = getnetent()) {
+		if (strcmp(p->n_name, name) == 0)
+			break;
+		for (cp = p->n_aliases; *cp != 0; cp++)
+			if (strcmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	if (!_net_stayopen)
+		endnetent();
+	return (p);
+}
diff --git a/lib/libc/net/getnetent.3 b/lib/libc/net/getnetent.3
new file mode 100644
index 000000000000..a4991763c985
--- /dev/null
+++ b/lib/libc/net/getnetent.3
@@ -0,0 +1,151 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getnetent.3	6.6 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt GETNETENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getnetent ,
+.Nm getnetbyaddr ,
+.Nm getnetbyname ,
+.Nm setnetent ,
+.Nm endnetent
+.Nd get network entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct netent *
+.Fn getnetent 
+.Ft struct netent *
+.Fn getnetbyname "char *name"
+.Ft struct netent *
+.Fn getnetbyaddr "long net" "int type"
+.Fn setnetent "int stayopen"
+.Fn endnetent 
+.Sh DESCRIPTION
+The
+.Fn getnetent ,
+.Fn getnetbyname ,
+and
+.Fn getnetbyaddr
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network data base,
+.Pa /etc/networks .
+.Bd -literal -offset indent
+struct	netent {
+	char		*n_name;	/* official name of net */
+	char		**n_aliases;	/* alias list */
+	int		n_addrtype;	/* net number type */
+	unsigned long	n_net;		/* net number */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width n_addrtype
+.It Fa n_name
+The official name of the network.
+.It Fa n_aliases
+A zero terminated list of alternate names for the network.
+.It Fa n_addrtype
+The type of the network number returned; currently only AF_INET.
+.It Fa n_net
+The network number.  Network numbers are returned in machine byte
+order.
+.El
+.Pp
+The
+.Fn getnetent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setnetent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getnetbyname
+or
+.Fn getnetbyaddr .
+.Pp
+The
+.Fn endnetent
+function
+closes the file.
+.Pp
+The
+.Fn getnetbyname
+function
+and
+.Fn getnetbyaddr
+sequentially search from the beginning
+of the file until a matching
+net name or
+net address and type is found,
+or until
+.Dv EOF
+is encountered.
+Network numbers are supplied in host order.
+.Sh FILES
+.Bl -tag -width /etc/networks -compact
+.It Pa /etc/networks
+.El
+.Sh DIAGNOSTICS
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh SEE ALSO
+.Xr networks 5
+.Sh HISTORY
+The
+.Fn getnetent ,
+.Fn getnetbyaddr ,
+.Fn getnetbyname ,
+.Fn setnetent ,
+and
+.Fn endnetent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+The data space used by
+these functions is static; if future use requires the data, it should be
+copied before any subsequent calls to these functions overwrite it.
+Only Internet network
+numbers are currently understood.
+Expecting network numbers to fit
+in no more than 32 bits is probably
+naive.
diff --git a/lib/libc/net/getnetent.c b/lib/libc/net/getnetent.c
new file mode 100644
index 000000000000..5a3779dcd9d0
--- /dev/null
+++ b/lib/libc/net/getnetent.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getnetent.c	5.8 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+
+static FILE *netf;
+static char line[BUFSIZ+1];
+static struct netent net;
+static char *net_aliases[MAXALIASES];
+int _net_stayopen;
+
+void
+setnetent(f)
+	int f;
+{
+	if (netf == NULL)
+		netf = fopen(_PATH_NETWORKS, "r" );
+	else
+		rewind(netf);
+	_net_stayopen |= f;
+}
+
+void
+endnetent()
+{
+	if (netf) {
+		fclose(netf);
+		netf = NULL;
+	}
+	_net_stayopen = 0;
+}
+
+struct netent *
+getnetent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
+		return (NULL);
+again:
+	p = fgets(line, BUFSIZ, netf);
+	if (p == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	net.n_name = p;
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	p = strpbrk(cp, " \t");
+	if (p != NULL)
+		*p++ = '\0';
+	net.n_net = inet_network(cp);
+	net.n_addrtype = AF_INET;
+	q = net.n_aliases = net_aliases;
+	if (p != NULL) 
+		cp = p;
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &net_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&net);
+}
diff --git a/lib/libc/net/getproto.c b/lib/libc/net/getproto.c
new file mode 100644
index 000000000000..7b952a4bb6a2
--- /dev/null
+++ b/lib/libc/net/getproto.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getproto.c	5.6 (Berkeley) 6/1/90";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+
+extern int _proto_stayopen;
+
+struct protoent *
+getprotobynumber(proto)
+	register int proto;
+{
+	register struct protoent *p;
+
+	setprotoent(_proto_stayopen);
+	while (p = getprotoent())
+		if (p->p_proto == proto)
+			break;
+	if (!_proto_stayopen)
+		endprotoent();
+	return (p);
+}
diff --git a/lib/libc/net/getprotoent.3 b/lib/libc/net/getprotoent.3
new file mode 100644
index 000000000000..e897a5bad1f9
--- /dev/null
+++ b/lib/libc/net/getprotoent.3
@@ -0,0 +1,144 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getprotoent.3	6.6 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt GETPROTOENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getprotoent ,
+.Nm getprotobynumber ,
+.Nm getprotobyname ,
+.Nm setprotoent ,
+.Nm endprotoent
+.Nd get protocol entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct protoent *
+.Fn getprotoent 
+.Ft struct protoent *
+.Fn getprotobyname "char *name"
+.Ft struct protoent *
+.Fn getprotobynumber "int proto"
+.Fn setprotoent "int stayopen"
+.Fn endprotoent 
+.Sh DESCRIPTION
+The
+.Fn getprotoent ,
+.Fn getprotobyname ,
+and
+.Fn getprotobynumber
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network protocol data base,
+.Pa /etc/protocols .
+.Bd -literal -offset indent
+.Pp
+struct	protoent {
+	char	*p_name;	/* official name of protocol */
+	char	**p_aliases;	/* alias list */
+	int	p_proto;	/* protocol number */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width p_aliases
+.It Fa p_name
+The official name of the protocol.
+.It Fa p_aliases
+A zero terminated list of alternate names for the protocol.
+.It Fa p_proto
+The protocol number.
+.El
+.Pp
+The
+.Fn getprotoent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setprotoent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getprotobyname
+or
+.Fn getprotobynumber .
+.Pp
+The
+.Fn endprotoent
+function
+closes the file.
+.Pp
+The
+.Fn getprotobyname
+function
+and
+.Fn getprotobynumber
+sequentially search from the beginning
+of the file until a matching
+protocol name or
+protocol number is found,
+or until
+.Dv EOF
+is encountered.
+.Sh RETURN VALUES
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh FILES
+.Bl -tag -width /etc/protocols -compact
+.It Pa /etc/protocols
+.El
+.Sh SEE ALSO
+.Xr protocols 5
+.Sh HISTORY
+The
+.Fn getprotoent ,
+.Fn getprotobynumber ,
+.Fn getprotobyname ,
+.Fn setprotoent ,
+and
+.Fn endprotoent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+These functions use a static data space;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Only the Internet
+protocols are currently understood.
diff --git a/lib/libc/net/getprotoent.c b/lib/libc/net/getprotoent.c
new file mode 100644
index 000000000000..7292c2663dea
--- /dev/null
+++ b/lib/libc/net/getprotoent.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getprotoent.c	5.8 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define	MAXALIASES	35
+
+static FILE *protof = NULL;
+static char line[BUFSIZ+1];
+static struct protoent proto;
+static char *proto_aliases[MAXALIASES];
+int _proto_stayopen;
+
+void
+setprotoent(f)
+	int f;
+{
+	if (protof == NULL)
+		protof = fopen(_PATH_PROTOCOLS, "r" );
+	else
+		rewind(protof);
+	_proto_stayopen |= f;
+}
+
+void
+endprotoent()
+{
+	if (protof) {
+		fclose(protof);
+		protof = NULL;
+	}
+	_proto_stayopen = 0;
+}
+
+struct protoent *
+getprotoent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(line, BUFSIZ, protof)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	proto.p_name = p;
+	cp = strpbrk(p, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	p = strpbrk(cp, " \t");
+	if (p != NULL)
+		*p++ = '\0';
+	proto.p_proto = atoi(cp);
+	q = proto.p_aliases = proto_aliases;
+	if (p != NULL) {
+		cp = p;
+		while (cp && *cp) {
+			if (*cp == ' ' || *cp == '\t') {
+				cp++;
+				continue;
+			}
+			if (q < &proto_aliases[MAXALIASES - 1])
+				*q++ = cp;
+			cp = strpbrk(cp, " \t");
+			if (cp != NULL)
+				*cp++ = '\0';
+		}
+	}
+	*q = NULL;
+	return (&proto);
+}
diff --git a/lib/libc/net/getprotoname.c b/lib/libc/net/getprotoname.c
new file mode 100644
index 000000000000..74295684719f
--- /dev/null
+++ b/lib/libc/net/getprotoname.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getprotoname.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _proto_stayopen;
+
+struct protoent *
+getprotobyname(name)
+	register const char *name;
+{
+	register struct protoent *p;
+	register char **cp;
+
+	setprotoent(_proto_stayopen);
+	while (p = getprotoent()) {
+		if (strcmp(p->p_name, name) == 0)
+			break;
+		for (cp = p->p_aliases; *cp != 0; cp++)
+			if (strcmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	if (!_proto_stayopen)
+		endprotoent();
+	return (p);
+}
diff --git a/lib/libc/net/getservbyname.c b/lib/libc/net/getservbyname.c
new file mode 100644
index 000000000000..84d50c9f8d7e
--- /dev/null
+++ b/lib/libc/net/getservbyname.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservbyname.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _serv_stayopen;
+
+struct servent *
+getservbyname(name, proto)
+	const char *name, *proto;
+{
+	register struct servent *p;
+	register char **cp;
+
+	setservent(_serv_stayopen);
+	while (p = getservent()) {
+		if (strcmp(name, p->s_name) == 0)
+			goto gotname;
+		for (cp = p->s_aliases; *cp; cp++)
+			if (strcmp(name, *cp) == 0)
+				goto gotname;
+		continue;
+gotname:
+		if (proto == 0 || strcmp(p->s_proto, proto) == 0)
+			break;
+	}
+	if (!_serv_stayopen)
+		endservent();
+	return (p);
+}
diff --git a/lib/libc/net/getservbyport.c b/lib/libc/net/getservbyport.c
new file mode 100644
index 000000000000..531742bf0aee
--- /dev/null
+++ b/lib/libc/net/getservbyport.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservbyport.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <netdb.h>
+#include <string.h>
+
+extern int _serv_stayopen;
+
+struct servent *
+getservbyport(port, proto)
+	int port;
+	const char *proto;
+{
+	register struct servent *p;
+
+	setservent(_serv_stayopen);
+	while (p = getservent()) {
+		if (p->s_port != port)
+			continue;
+		if (proto == 0 || strcmp(p->s_proto, proto) == 0)
+			break;
+	}
+	if (!_serv_stayopen)
+		endservent();
+	return (p);
+}
diff --git a/lib/libc/net/getservent.3 b/lib/libc/net/getservent.3
new file mode 100644
index 000000000000..cc7e86b151c6
--- /dev/null
+++ b/lib/libc/net/getservent.3
@@ -0,0 +1,154 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getservent.3	6.6 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt GETSERVENT 3
+.Os BSD 4.2
+.Sh NAME
+.Nm getservent ,
+.Nm getservbyport ,
+.Nm getservbyname ,
+.Nm setservent ,
+.Nm endservent
+.Nd get service entry
+.Sh SYNOPSIS
+.Fd #include <netdb.h>
+.Ft struct servent *
+.Fn getservent 
+.Ft struct servent *
+.Fn getservbyname "char *name" "char *proto"
+.Ft struct servent *
+.Fn getservbyport "int port" proto
+.Ft void
+.Fn setservent "int stayopen"
+.Ft void
+.Fn endservent void
+.Sh DESCRIPTION
+The
+.Fn getservent ,
+.Fn getservbyname ,
+and
+.Fn getservbyport
+functions
+each return a pointer to an object with the
+following structure
+containing the broken-out
+fields of a line in the network services data base,
+.Pa /etc/services .
+.Bd -literal -offset indent
+struct	servent {
+	char	*s_name;	/* official name of service */
+	char	**s_aliases;	/* alias list */
+	int	s_port;		/* port service resides at */
+	char	*s_proto;	/* protocol to use */
+};
+.Ed
+.Pp
+The members of this structure are:
+.Bl -tag -width s_aliases
+.It Fa s_name
+The official name of the service.
+.It Fa s_aliases
+A zero terminated list of alternate names for the service.
+.It Fa s_port
+The port number at which the service resides.
+Port numbers are returned in network byte order.
+.It Fa s_proto
+The name of the protocol to use when contacting the
+service.
+.El
+.Pp
+The
+.Fn getservent
+function
+reads the next line of the file, opening the file if necessary.
+.Pp
+The
+.Fn setservent
+function
+opens and rewinds the file.  If the
+.Fa stayopen
+flag is non-zero,
+the net data base will not be closed after each call to 
+.Fn getservbyname
+or
+.Fn getservbyport .
+.Pp
+The
+.Fn endservent
+function
+closes the file.
+.Pp
+The
+.Fn getservbyname
+and
+.Fn getservbyport
+functions
+sequentially search from the beginning
+of the file until a matching
+protocol name or
+port number is found,
+or until
+.Dv EOF
+is encountered.
+If a protocol name is also supplied (non-
+.Dv NULL ) , 
+searches must also match the protocol.
+.Sh FILES
+.Bl -tag -width /etc/services -compact
+.It Pa /etc/services
+.El
+.Sh DIAGNOSTICS
+Null pointer
+(0) returned on
+.Dv EOF
+or error.
+.Sh SEE ALSO
+.Xr getprotoent 3 ,
+.Xr services 5
+.Sh HISTORY
+The
+.Fn getservent ,
+.Fn getservbyport ,
+.Fn getservbyname ,
+.Fn setservent ,
+and
+.Fn endservent
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+These functions use static data storage;
+if the data is needed for future use, it should be
+copied before any subsequent calls overwrite it.
+Expecting port numbers to fit in a 32 bit
+quantity is probably naive.
diff --git a/lib/libc/net/getservent.c b/lib/libc/net/getservent.c
new file mode 100644
index 000000000000..00756714923c
--- /dev/null
+++ b/lib/libc/net/getservent.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)getservent.c	5.9 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define	MAXALIASES	35
+
+static FILE *servf = NULL;
+static char line[BUFSIZ+1];
+static struct servent serv;
+static char *serv_aliases[MAXALIASES];
+int _serv_stayopen;
+
+void
+setservent(f)
+	int f;
+{
+	if (servf == NULL)
+		servf = fopen(_PATH_SERVICES, "r" );
+	else
+		rewind(servf);
+	_serv_stayopen |= f;
+}
+
+void
+endservent()
+{
+	if (servf) {
+		fclose(servf);
+		servf = NULL;
+	}
+	_serv_stayopen = 0;
+}
+
+struct servent *
+getservent()
+{
+	char *p;
+	register char *cp, **q;
+
+	if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL)
+		return (NULL);
+again:
+	if ((p = fgets(line, BUFSIZ, servf)) == NULL)
+		return (NULL);
+	if (*p == '#')
+		goto again;
+	cp = strpbrk(p, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	serv.s_name = p;
+	p = strpbrk(p, " \t");
+	if (p == NULL)
+		goto again;
+	*p++ = '\0';
+	while (*p == ' ' || *p == '\t')
+		p++;
+	cp = strpbrk(p, ",/");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	serv.s_port = htons((u_short)atoi(p));
+	serv.s_proto = cp;
+	q = serv.s_aliases = serv_aliases;
+	cp = strpbrk(cp, " \t");
+	if (cp != NULL)
+		*cp++ = '\0';
+	while (cp && *cp) {
+		if (*cp == ' ' || *cp == '\t') {
+			cp++;
+			continue;
+		}
+		if (q < &serv_aliases[MAXALIASES - 1])
+			*q++ = cp;
+		cp = strpbrk(cp, " \t");
+		if (cp != NULL)
+			*cp++ = '\0';
+	}
+	*q = NULL;
+	return (&serv);
+}
diff --git a/lib/libc/net/herror.c b/lib/libc/net/herror.c
new file mode 100644
index 000000000000..f8969258350c
--- /dev/null
+++ b/lib/libc/net/herror.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)herror.c	6.6 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+
+char	*h_errlist[] = {
+	"Error 0",
+	"Unknown host",				/* 1 HOST_NOT_FOUND */
+	"Host name lookup failure",		/* 2 TRY_AGAIN */
+	"Unknown server error",			/* 3 NO_RECOVERY */
+	"No address associated with name",	/* 4 NO_ADDRESS */
+};
+int	h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
+
+extern int	h_errno;
+
+/*
+ * herror --
+ *	print the error indicated by the h_errno value.
+ */
+void
+herror(s)
+	const char *s;
+{
+	struct iovec iov[4];
+	register struct iovec *v = iov;
+
+	if (s && *s) {
+		v->iov_base = (char *)s;
+		v->iov_len = strlen(s);
+		v++;
+		v->iov_base = ": ";
+		v->iov_len = 2;
+		v++;
+	}
+	v->iov_base = (u_int)h_errno < h_nerr ?
+	    h_errlist[h_errno] : "Unknown error";
+	v->iov_len = strlen(v->iov_base);
+	v++;
+	v->iov_base = "\n";
+	v->iov_len = 1;
+	writev(STDERR_FILENO, iov, (v - iov) + 1);
+}
diff --git a/lib/libc/net/inet.3 b/lib/libc/net/inet.3
new file mode 100644
index 000000000000..e5d063761518
--- /dev/null
+++ b/lib/libc/net/inet.3
@@ -0,0 +1,195 @@
+.\" Copyright (c) 1983, 1990, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)inet.3	6.10 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt INET 3
+.Os BSD 4.2
+.Sh NAME
+.Nm inet_aton ,
+.Nm inet_addr ,
+.Nm inet_network ,
+.Nm inet_ntoa ,
+.Nm inet_makeaddr ,
+.Nm inet_lnaof ,
+.Nm inet_netof
+.Nd Internet address manipulation routines
+.Sh SYNOPSIS
+.Fd #include <sys/socket.h>
+.Fd #include <netinet/in.h>
+.Fd #include <arpa/inet.h>
+.Ft int 
+.Fn inet_aton "char *cp" "struct in_addr *pin"
+.Ft unsigned long 
+.Fn inet_addr "char *cp"
+.Ft unsigned long 
+.Fn inet_network "char *cp"
+.Ft char *
+.Fn inet_ntoa "struct in_addr in"
+.Ft struct in_addr 
+.Fn inet_makeaddr "int net" "int lna"
+.Ft unsigned long 
+.Fn inet_lnaof "struct in_addr in"
+.Ft unsigned long 
+.Fn inet_netof "struct in_addr in"
+.Sh DESCRIPTION
+The routines
+.Fn inet_aton ,
+.Fn inet_addr
+and
+.Fn inet_network
+interpret character strings representing
+numbers expressed in the Internet standard
+.Ql \&.
+notation.
+The
+.Fn inet_aton
+routine interprets the specified character string as an Internet address,
+placing the address into the structure provided.
+It returns 1 if the string was successfully interpreted,
+or 0 if the string is invalid.
+The
+.Fn inet_addr
+and
+.Fn inet_network
+functions return numbers suitable for use
+as Internet addresses and Internet network
+numbers, respectively.
+The routine
+.Fn inet_ntoa
+takes an Internet address and returns an
+.Tn ASCII
+string representing the address in
+.Ql \&.
+notation.  The routine
+.Fn inet_makeaddr
+takes an Internet network number and a local
+network address and constructs an Internet address
+from it.  The routines
+.Fn inet_netof
+and
+.Fn inet_lnaof
+break apart Internet host addresses, returning
+the network number and local network address part,
+respectively.
+.Pp
+All Internet addresses are returned in network
+order (bytes ordered from left to right).
+All network numbers and local address parts are
+returned as machine format integer values.
+.Sh INTERNET ADDRESSES
+Values specified using the
+.Ql \&.
+notation take one
+of the following forms:
+.Bd -literal -offset indent
+a.b.c.d
+a.b.c
+a.b
+a
+.Ed
+.Pp
+When four parts are specified, each is interpreted
+as a byte of data and assigned, from left to right,
+to the four bytes of an Internet address.  Note
+that when an Internet address is viewed as a 32-bit
+integer quantity on the
+.Tn VAX
+the bytes referred to
+above appear as
+.Dq Li d.c.b.a .
+That is,
+.Tn VAX
+bytes are
+ordered from right to left.
+.Pp
+When a three part address is specified, the last
+part is interpreted as a 16-bit quantity and placed
+in the right-most two bytes of the network address.
+This makes the three part address format convenient
+for specifying Class B network addresses as
+.Dq Li 128.net.host .
+.Pp
+When a two part address is supplied, the last part
+is interpreted as a 24-bit quantity and placed in
+the right most three bytes of the network address.
+This makes the two part address format convenient
+for specifying Class A network addresses as
+.Dq Li net.host .
+.Pp
+When only one part is given, the value is stored
+directly in the network address without any byte
+rearrangement.
+.Pp
+All numbers supplied as
+.Dq parts
+in a
+.Ql  \&.
+notation
+may be decimal, octal, or hexadecimal, as specified
+in the C language (i.e., a leading 0x or 0X implies
+hexadecimal; otherwise, a leading 0 implies octal;
+otherwise, the number is interpreted as decimal).
+.Sh DIAGNOSTICS
+The constant
+.Dv INADDR_NONE
+is returned by
+.Fn inet_addr
+and
+.Fn inet_network
+for malformed requests.
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr getnetent 3 ,
+.Xr hosts 5 ,
+.Xr networks 5 ,
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
+.Sh BUGS
+The value
+.Dv INADDR_NONE
+(0xffffffff) is a valid broadcast address, but
+.Fn inet_addr
+cannot return that value without indicating failure.
+The newer
+.Fn inet_aton
+function does not share this problem.
+The problem of host byte ordering versus network byte ordering is
+confusing.
+The string returned by
+.Fn inet_ntoa
+resides in a static memory area.
+.Pp
+Inet_addr should return a
+.Fa struct in_addr .
diff --git a/lib/libc/net/inet_addr.c b/lib/libc/net/inet_addr.c
new file mode 100644
index 000000000000..b70ce6174d28
--- /dev/null
+++ b/lib/libc/net/inet_addr.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 1983, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_addr.c	5.11 (Berkeley) 12/9/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+
+/*
+ * Ascii internet address interpretation routine.
+ * The value returned is in network order.
+ */
+u_long
+inet_addr(cp)
+	register const char *cp;
+{
+	struct in_addr val;
+
+	if (inet_aton(cp, &val))
+		return (val.s_addr);
+	return (INADDR_NONE);
+}
+
+/* 
+ * Check whether "cp" is a valid ascii representation
+ * of an Internet address and convert to a binary address.
+ * Returns 1 if the address is valid, 0 if not.
+ * This replaces inet_addr, the return value from which
+ * cannot distinguish between failure and a local broadcast address.
+ */
+unsigned long
+inet_aton(cp, addr)
+	register const char *cp;
+	struct in_addr *addr;
+{
+	register u_long val, base, n;
+	register char c;
+	u_long parts[4], *pp = parts;
+
+	for (;;) {
+		/*
+		 * Collect number up to ``.''.
+		 * Values are specified as for C:
+		 * 0x=hex, 0=octal, other=decimal.
+		 */
+		val = 0; base = 10;
+		if (*cp == '0') {
+			if (*++cp == 'x' || *cp == 'X')
+				base = 16, cp++;
+			else
+				base = 8;
+		}
+		while ((c = *cp) != '\0') {
+			if (isascii(c) && isdigit(c)) {
+				val = (val * base) + (c - '0');
+				cp++;
+				continue;
+			}
+			if (base == 16 && isascii(c) && isxdigit(c)) {
+				val = (val << 4) + 
+					(c + 10 - (islower(c) ? 'a' : 'A'));
+				cp++;
+				continue;
+			}
+			break;
+		}
+		if (*cp == '.') {
+			/*
+			 * Internet format:
+			 *	a.b.c.d
+			 *	a.b.c	(with c treated as 16-bits)
+			 *	a.b	(with b treated as 24 bits)
+			 */
+			if (pp >= parts + 3 || val > 0xff)
+				return (0);
+			*pp++ = val, cp++;
+		} else
+			break;
+	}
+	/*
+	 * Check for trailing characters.
+	 */
+	if (*cp && (!isascii(*cp) || !isspace(*cp)))
+		return (0);
+	/*
+	 * Concoct the address according to
+	 * the number of parts specified.
+	 */
+	n = pp - parts + 1;
+	switch (n) {
+
+	case 1:				/* a -- 32 bits */
+		break;
+
+	case 2:				/* a.b -- 8.24 bits */
+		if (val > 0xffffff)
+			return (0);
+		val |= parts[0] << 24;
+		break;
+
+	case 3:				/* a.b.c -- 8.8.16 bits */
+		if (val > 0xffff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16);
+		break;
+
+	case 4:				/* a.b.c.d -- 8.8.8.8 bits */
+		if (val > 0xff)
+			return (0);
+		val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+		break;
+	}
+	if (addr)
+		addr->s_addr = htonl(val);
+	return (1);
+}
diff --git a/lib/libc/net/inet_lnaof.c b/lib/libc/net/inet_lnaof.c
new file mode 100644
index 000000000000..55fa489e5f1a
--- /dev/null
+++ b/lib/libc/net/inet_lnaof.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_lnaof.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Return the local network address portion of an
+ * internet address; handles class a/b/c network
+ * number formats.
+ */
+u_long
+inet_lnaof(in)
+	struct in_addr in;
+{
+	register u_long i = ntohl(in.s_addr);
+
+	if (IN_CLASSA(i))
+		return ((i)&IN_CLASSA_HOST);
+	else if (IN_CLASSB(i))
+		return ((i)&IN_CLASSB_HOST);
+	else
+		return ((i)&IN_CLASSC_HOST);
+}
diff --git a/lib/libc/net/inet_makeaddr.c b/lib/libc/net/inet_makeaddr.c
new file mode 100644
index 000000000000..d9827d0fbf9b
--- /dev/null
+++ b/lib/libc/net/inet_makeaddr.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_makeaddr.c	5.6 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Formulate an Internet address from network + host.  Used in
+ * building addresses stored in the ifnet structure.
+ */
+struct in_addr
+inet_makeaddr(net, host)
+	u_long net, host;
+{
+	u_long addr;
+
+	if (net < 128)
+		addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
+	else if (net < 65536)
+		addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
+	else if (net < 16777216L)
+		addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
+	else
+		addr = net | host;
+	addr = htonl(addr);
+	return (*(struct in_addr *)&addr);
+}
diff --git a/lib/libc/net/inet_netof.c b/lib/libc/net/inet_netof.c
new file mode 100644
index 000000000000..86c64b92a6ad
--- /dev/null
+++ b/lib/libc/net/inet_netof.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_netof.c	5.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+/*
+ * Return the network number from an internet
+ * address; handles class a/b/c network #'s.
+ */
+u_long
+inet_netof(in)
+	struct in_addr in;
+{
+	register u_long i = ntohl(in.s_addr);
+
+	if (IN_CLASSA(i))
+		return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT);
+	else if (IN_CLASSB(i))
+		return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT);
+	else
+		return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT);
+}
diff --git a/lib/libc/net/inet_network.c b/lib/libc/net/inet_network.c
new file mode 100644
index 000000000000..d3e4261252a1
--- /dev/null
+++ b/lib/libc/net/inet_network.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_network.c	5.8 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <ctype.h>
+
+/*
+ * Internet network address interpretation routine.
+ * The library routines call this routine to interpret
+ * network numbers.
+ */
+u_long
+inet_network(cp)
+	register const char *cp;
+{
+	register u_long val, base, n;
+	register char c;
+	u_long parts[4], *pp = parts;
+	register int i;
+
+again:
+	val = 0; base = 10;
+	if (*cp == '0')
+		base = 8, cp++;
+	if (*cp == 'x' || *cp == 'X')
+		base = 16, cp++;
+	while (c = *cp) {
+		if (isdigit(c)) {
+			val = (val * base) + (c - '0');
+			cp++;
+			continue;
+		}
+		if (base == 16 && isxdigit(c)) {
+			val = (val << 4) + (c + 10 - (islower(c) ? 'a' : 'A'));
+			cp++;
+			continue;
+		}
+		break;
+	}
+	if (*cp == '.') {
+		if (pp >= parts + 4)
+			return (INADDR_NONE);
+		*pp++ = val, cp++;
+		goto again;
+	}
+	if (*cp && !isspace(*cp))
+		return (INADDR_NONE);
+	*pp++ = val;
+	n = pp - parts;
+	if (n > 4)
+		return (INADDR_NONE);
+	for (val = 0, i = 0; i < n; i++) {
+		val <<= 8;
+		val |= parts[i] & 0xff;
+	}
+	return (val);
+}
diff --git a/lib/libc/net/inet_ntoa.c b/lib/libc/net/inet_ntoa.c
new file mode 100644
index 000000000000..2379c08779b8
--- /dev/null
+++ b/lib/libc/net/inet_ntoa.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)inet_ntoa.c	5.6 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Convert network-format internet address
+ * to base 256 d.d.d.d representation.
+ */
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+
+char *
+inet_ntoa(in)
+	struct in_addr in;
+{
+	static char b[18];
+	register char *p;
+
+	p = (char *)&in;
+#define	UC(b)	(((int)b)&0xff)
+	(void)snprintf(b, sizeof(b),
+	    "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
+	return (b);
+}
diff --git a/lib/libc/net/iso_addr.c b/lib/libc/net/iso_addr.c
new file mode 100644
index 000000000000..c3e6f5818a9a
--- /dev/null
+++ b/lib/libc/net/iso_addr.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)iso_addr.c	5.4 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <netiso/iso.h>
+#include <string.h>
+
+/* States*/
+#define VIRGIN	0
+#define GOTONE	1
+#define GOTTWO	2
+/* Inputs */
+#define	DIGIT	(4*0)
+#define	END	(4*1)
+#define DELIM	(4*2)
+
+struct iso_addr *
+iso_addr(addr)
+	register const char *addr;
+{
+	static struct iso_addr out_addr;
+	register char *cp = out_addr.isoa_genaddr;
+	char *cplim = cp + sizeof(out_addr.isoa_genaddr);
+	register int byte = 0, state = VIRGIN, new;
+
+	bzero((char *)&out_addr, sizeof(out_addr));
+	do {
+		if ((*addr >= '0') && (*addr <= '9')) {
+			new = *addr - '0';
+		} else if ((*addr >= 'a') && (*addr <= 'f')) {
+			new = *addr - 'a' + 10;
+		} else if ((*addr >= 'A') && (*addr <= 'F')) {
+			new = *addr - 'A' + 10;
+		} else if (*addr == 0) 
+			state |= END;
+		else
+			state |= DELIM;
+		addr++;
+		switch (state /* | INPUT */) {
+		case GOTTWO | DIGIT:
+			*cp++ = byte; /*FALLTHROUGH*/
+		case VIRGIN | DIGIT:
+			state = GOTONE; byte = new; continue;
+		case GOTONE | DIGIT:
+			state = GOTTWO; byte = new + (byte << 4); continue;
+		default: /* | DELIM */
+			state = VIRGIN; *cp++ = byte; byte = 0; continue;
+		case GOTONE | END:
+		case GOTTWO | END:
+			*cp++ = byte; /* FALLTHROUGH */
+		case VIRGIN | END:
+			break;
+		}
+		break;
+	} while (cp < cplim); 
+	out_addr.isoa_len = cp - out_addr.isoa_genaddr;
+	return (&out_addr);
+}
+static char hexlist[] = "0123456789abcdef";
+
+char *
+iso_ntoa(isoa)
+	const struct iso_addr *isoa;
+{
+	static char obuf[64];
+	register char *out = obuf; 
+	register int i;
+	register u_char *in = (u_char *)isoa->isoa_genaddr;
+	u_char *inlim = in + isoa->isoa_len;
+
+	out[1] = 0;
+	while (in < inlim) {
+		i = *in++;
+		*out++ = '.';
+		if (i > 0xf) {
+			out[1] = hexlist[i & 0xf];
+			i >>= 4;
+			out[0] = hexlist[i];
+			out += 2;
+		} else
+			*out++ = hexlist[i];
+	}
+	*out = 0;
+	return(obuf + 1);
+}
diff --git a/lib/libc/net/linkaddr.c b/lib/libc/net/linkaddr.c
new file mode 100644
index 000000000000..afe75db00a3a
--- /dev/null
+++ b/lib/libc/net/linkaddr.c
@@ -0,0 +1,142 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)linkaddr.c	5.2 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if_dl.h>
+#include <string.h>
+
+/* States*/
+#define NAMING	0
+#define GOTONE	1
+#define GOTTWO	2
+#define RESET	3
+/* Inputs */
+#define	DIGIT	(4*0)
+#define	END	(4*1)
+#define DELIM	(4*2)
+#define LETTER	(4*3)
+
+void
+link_addr(addr, sdl)
+	register const char *addr;
+	register struct sockaddr_dl *sdl;
+{
+	register char *cp = sdl->sdl_data;
+	char *cplim = sdl->sdl_len + (char *)sdl;
+	register int byte = 0, state = NAMING, new;
+
+	bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1);
+	sdl->sdl_family = AF_LINK;
+	do {
+		state &= ~LETTER;
+		if ((*addr >= '0') && (*addr <= '9')) {
+			new = *addr - '0';
+		} else if ((*addr >= 'a') && (*addr <= 'f')) {
+			new = *addr - 'a' + 10;
+		} else if ((*addr >= 'A') && (*addr <= 'F')) {
+			new = *addr - 'A' + 10;
+		} else if (*addr == 0) {
+			state |= END;
+		} else if (state == NAMING &&
+			   (((*addr >= 'A') && (*addr <= 'Z')) ||
+			   ((*addr >= 'a') && (*addr <= 'z'))))
+			state |= LETTER;
+		else
+			state |= DELIM;
+		addr++;
+		switch (state /* | INPUT */) {
+		case NAMING | DIGIT:
+		case NAMING | LETTER:
+			*cp++ = addr[-1]; continue;
+		case NAMING | DELIM:
+			state = RESET; sdl->sdl_nlen = cp - sdl->sdl_data; continue;
+		case GOTTWO | DIGIT:
+			*cp++ = byte; /*FALLTHROUGH*/
+		case RESET | DIGIT:
+			state = GOTONE; byte = new; continue;
+		case GOTONE | DIGIT:
+			state = GOTTWO; byte = new + (byte << 4); continue;
+		default: /* | DELIM */
+			state = RESET; *cp++ = byte; byte = 0; continue;
+		case GOTONE | END:
+		case GOTTWO | END:
+			*cp++ = byte; /* FALLTHROUGH */
+		case RESET | END:
+			break;
+		}
+		break;
+	} while (cp < cplim); 
+	sdl->sdl_alen = cp - LLADDR(sdl);
+	new = cp - (char *)sdl;
+	if (new > sizeof(*sdl))
+		sdl->sdl_len = new;
+	return;
+}
+
+static char hexlist[] = "0123456789abcdef";
+
+char *
+link_ntoa(sdl)
+	register const struct sockaddr_dl *sdl;
+{
+	static char obuf[64];
+	register char *out = obuf; 
+	register int i;
+	register u_char *in = (u_char *)LLADDR(sdl);
+	u_char *inlim = in + sdl->sdl_nlen;
+	int firsttime = 1;
+
+	if (sdl->sdl_nlen) {
+		bcopy(sdl->sdl_data, obuf, sdl->sdl_nlen);
+		out += sdl->sdl_nlen;
+		*out++ = ':';
+	}
+	while (in < inlim) {
+		if (firsttime) firsttime = 0; else *out++ = '.';
+		i = *in++;
+		if (i > 0xf) {
+			out[1] = hexlist[i & 0xf];
+			i >>= 4;
+			out[0] = hexlist[i];
+			out += 2;
+		} else
+			*out++ = hexlist[i];
+	}
+	*out = 0;
+	return(obuf);
+}
diff --git a/lib/libc/net/ns.3 b/lib/libc/net/ns.3
new file mode 100644
index 000000000000..1aaa0ce31508
--- /dev/null
+++ b/lib/libc/net/ns.3
@@ -0,0 +1,130 @@
+.\" Copyright (c) 1986, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)ns.3	6.5 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt NS 3
+.Os BSD 4.3
+.Sh NAME
+.Nm ns_addr ,
+.Nm ns_ntoa
+.Nd Xerox
+.Tn NS Ns (tm)
+address conversion routines
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <netns/ns.h>
+.Ft struct ns_addr 
+.Fn ns_addr "char *cp"
+.Ft char *
+.Fn ns_ntoa "struct ns_addr ns"
+.Sh DESCRIPTION
+The routine
+.Fn ns_addr
+interprets character strings representing
+.Tn XNS
+addresses, returning binary information suitable
+for use in system calls.
+The routine
+.Fn ns_ntoa
+takes
+.Tn XNS
+addresses and returns
+.Tn ASCII
+strings representing the address in a
+notation in common use in the Xerox Development Environment:
+.Bd -filled -offset indent
+<network number>.<host number>.<port number>
+.Ed
+.Pp
+Trailing zero fields are suppressed, and each number is printed in hexadecimal,
+in a format suitable for input to 
+.Fn ns_addr .
+Any fields lacking super-decimal digits will have a
+trailing
+.Ql H
+appended.
+.Pp
+Unfortunately, no universal standard exists for representing
+.Tn XNS
+addresses.
+An effort has been made to insure that
+.Fn ns_addr
+be compatible with most formats in common use.
+It will first separate an address into 1 to 3 fields using a single delimiter
+chosen from
+period
+.Ql \&. ,
+colon
+.Ql \&:
+or pound-sign
+.Ql \&# .
+Each field is then examined for byte separators (colon or period).
+If there are byte separators, each subfield separated is taken to be
+a small hexadecimal number, and the entirety is taken as a network-byte-ordered
+quantity to be zero extended in the high-network-order bytes.
+Next, the field is inspected for hyphens, in which case
+the field is assumed to be a number in decimal notation
+with hyphens separating the millenia.
+Next, the field is assumed to be a number:
+It is interpreted
+as hexadecimal if there is a leading
+.Ql 0x
+(as in C),
+a trailing
+.Ql H
+(as in Mesa), or there are any super-decimal digits present.
+It is interpreted as octal is there is a leading
+.Ql 0
+and there are no super-octal digits.
+Otherwise, it is converted as a decimal number.
+.Sh RETURN VALUES
+None. (See
+.Sx BUGS . )
+.Sh SEE ALSO
+.Xr hosts 5 ,
+.Xr networks 5 ,
+.Sh HISTORY
+The
+.Fn ns_addr
+and
+.Fn ns_toa
+functions appeared in 
+.Bx 4.3 .
+.Sh BUGS
+The string returned by
+.Fn ns_ntoa
+resides in a static memory area.
+The function
+.Fn ns_addr
+should diagnose improperly formed input, and there should be an unambiguous
+way to recognize this.
diff --git a/lib/libc/net/ns_addr.c b/lib/libc/net/ns_addr.c
new file mode 100644
index 000000000000..e31e6d13570f
--- /dev/null
+++ b/lib/libc/net/ns_addr.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 1986 Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * J.Q. Johnson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ns_addr.c	6.7 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netns/ns.h>
+#include <stdio.h>
+#include <string.h>
+
+static struct ns_addr addr, zero_addr;
+
+static void Field(), cvtbase();
+
+struct ns_addr 
+ns_addr(name)
+	const char *name;
+{
+	char separator;
+	char *hostname, *socketname, *cp;
+	char buf[50];
+
+	(void)strncpy(buf, name, sizeof(buf - 1));
+	buf[sizeof(buf - 1)] = '\0';
+
+	/*
+	 * First, figure out what he intends as a field separtor.
+	 * Despite the way this routine is written, the prefered
+	 * form  2-272.AA001234H.01777, i.e. XDE standard.
+	 * Great efforts are made to insure backward compatability.
+	 */
+	if (hostname = index(buf, '#'))
+		separator = '#';
+	else {
+		hostname = index(buf, '.');
+		if ((cp = index(buf, ':')) &&
+		    ((hostname && cp < hostname) || (hostname == 0))) {
+			hostname = cp;
+			separator = ':';
+		} else
+			separator = '.';
+	}
+	if (hostname)
+		*hostname++ = 0;
+
+	addr = zero_addr;
+	Field(buf, addr.x_net.c_net, 4);
+	if (hostname == 0)
+		return (addr);  /* No separator means net only */
+
+	socketname = index(hostname, separator);
+	if (socketname) {
+		*socketname++ = 0;
+		Field(socketname, (u_char *)&addr.x_port, 2);
+	}
+
+	Field(hostname, addr.x_host.c_host, 6);
+
+	return (addr);
+}
+
+static void
+Field(buf, out, len)
+	char *buf;
+	u_char *out;
+	int len;
+{
+	register char *bp = buf;
+	int i, ibase, base16 = 0, base10 = 0, clen = 0;
+	int hb[6], *hp;
+	char *fmt;
+
+	/*
+	 * first try 2-273#2-852-151-014#socket
+	 */
+	if ((*buf != '-') &&
+	    (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) {
+		cvtbase(1000L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * try form 8E1#0.0.AA.0.5E.E6#socket
+	 */
+	if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
+		cvtbase(256L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * try form 8E1#0:0:AA:0:5E:E6#socket
+	 */
+	if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x",
+			&hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) {
+		cvtbase(256L, 256, hb, i, out, len);
+		return;
+	}
+	/*
+	 * This is REALLY stretching it but there was a
+	 * comma notation separting shorts -- definitely non standard
+	 */
+	if (1 < (i = sscanf(buf,"%x,%x,%x",
+			&hb[0], &hb[1], &hb[2]))) {
+		hb[0] = htons(hb[0]); hb[1] = htons(hb[1]);
+		hb[2] = htons(hb[2]);
+		cvtbase(65536L, 256, hb, i, out, len);
+		return;
+	}
+
+	/* Need to decide if base 10, 16 or 8 */
+	while (*bp) switch (*bp++) {
+
+	case '0': case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '-':
+		break;
+
+	case '8': case '9':
+		base10 = 1;
+		break;
+
+	case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+	case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		base16 = 1;
+		break;
+	
+	case 'x': case 'X':
+		*--bp = '0';
+		base16 = 1;
+		break;
+
+	case 'h': case 'H':
+		base16 = 1;
+		/* fall into */
+
+	default:
+		*--bp = 0; /* Ends Loop */
+	}
+	if (base16) {
+		fmt = "%3x";
+		ibase = 4096;
+	} else if (base10 == 0 && *buf == '0') {
+		fmt = "%3o";
+		ibase = 512;
+	} else {
+		fmt = "%3d";
+		ibase = 1000;
+	}
+
+	for (bp = buf; *bp++; ) clen++;
+	if (clen == 0) clen++;
+	if (clen > 18) clen = 18;
+	i = ((clen - 1) / 3) + 1;
+	bp = clen + buf - 3;
+	hp = hb + i - 1;
+
+	while (hp > hb) {
+		(void)sscanf(bp, fmt, hp);
+		bp[0] = 0;
+		hp--;
+		bp -= 3;
+	}
+	(void)sscanf(buf, fmt, hp);
+	cvtbase((long)ibase, 256, hb, i, out, len);
+}
+
+static void
+cvtbase(oldbase,newbase,input,inlen,result,reslen)
+	long oldbase;
+	int newbase;
+	int input[];
+	int inlen;
+	unsigned char result[];
+	int reslen;
+{
+	int d, e;
+	long sum;
+
+	e = 1;
+	while (e > 0 && reslen > 0) {
+		d = 0; e = 0; sum = 0;
+		/* long division: input=input/newbase */
+		while (d < inlen) {
+			sum = sum*oldbase + (long) input[d];
+			e += (sum > 0);
+			input[d++] = sum / newbase;
+			sum %= newbase;
+		}
+		result[--reslen] = sum;	/* accumulate remainder */
+	}
+	for (d=0; d < reslen; d++)
+		result[d] = 0;
+}
diff --git a/lib/libc/net/ns_ntoa.c b/lib/libc/net/ns_ntoa.c
new file mode 100644
index 000000000000..5bfff19b54a6
--- /dev/null
+++ b/lib/libc/net/ns_ntoa.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1986 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ns_ntoa.c	6.6 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netns/ns.h>
+#include <stdio.h>
+
+char *
+ns_ntoa(addr)
+	struct ns_addr addr;
+{
+	static char obuf[40];
+	union { union ns_net net_e; u_long long_e; } net;
+	u_short port = htons(addr.x_port);
+	register char *cp;
+	char *cp2;
+	register u_char *up = addr.x_host.c_host;
+	u_char *uplim = up + 6;
+	static char *spectHex();
+
+	net.net_e = addr.x_net;
+	sprintf(obuf, "%lx", ntohl(net.long_e));
+	cp = spectHex(obuf);
+	cp2 = cp + 1;
+	while (*up==0 && up < uplim) up++;
+	if (up == uplim) {
+		if (port) {
+			sprintf(cp, ".0");
+			cp += 2;
+		}
+	} else {
+		sprintf(cp, ".%x", *up++);
+		while (up < uplim) {
+			while (*cp) cp++;
+			sprintf(cp, "%02x", *up++);
+		}
+		cp = spectHex(cp2);
+	}
+	if (port) {
+		sprintf(cp, ".%x", port);
+		spectHex(cp + 1);
+	}
+	return (obuf);
+}
+
+static char *
+spectHex(p0)
+	char *p0;
+{
+	int ok = 0;
+	int nonzero = 0;
+	register char *p = p0;
+	for (; *p; p++) switch (*p) {
+
+	case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+		*p += ('A' - 'a');
+		/* fall into . . . */
+	case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		ok = 1;
+	case '1': case '2': case '3': case '4': case '5':
+	case '6': case '7': case '8': case '9':
+		nonzero = 1;
+	}
+	if (nonzero && !ok) { *p++ = 'H'; *p = 0; }
+	return (p);
+}
diff --git a/lib/libc/net/rcmd.3 b/lib/libc/net/rcmd.3
new file mode 100644
index 000000000000..44aa3d949471
--- /dev/null
+++ b/lib/libc/net/rcmd.3
@@ -0,0 +1,188 @@
+.\" Copyright (c) 1983, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)rcmd.3	6.11 (Berkeley) 4/19/91
+.\"
+.Dd April 19, 1991
+.Dt RCMD 3
+.Os BSD 4.2
+.Sh NAME
+.Nm rcmd ,
+.Nm rresvport ,
+.Nm ruserok
+.Nd routines for returning a stream to a remote command
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn rcmd "char **ahost" "int inport" "const char *locuser" "const char *remuser" "const char *cmd" "int *fd2p"
+.Ft int
+.Fn rresvport "int *port"
+.Ft int
+.Fn ruserok "const char *rhost" "int superuser" "const char *ruser" "const char *luser"
+.Sh DESCRIPTION
+The
+.Fn rcmd
+function
+is used by the super-user to execute a command on
+a remote machine using an authentication scheme based
+on reserved port numbers.
+The
+.Fn rresvport
+function
+returns a descriptor to a socket
+with an address in the privileged port space.
+The
+.Fn ruserok
+function
+is used by servers
+to authenticate clients requesting service with
+.Fn rcmd .
+All three functions are present in the same file and are used
+by the
+.Xr rshd 8
+server (among others).
+.Pp
+The
+.Fn rcmd
+function
+looks up the host
+.Fa *ahost
+using
+.Xr gethostbyname 3 ,
+returning \-1 if the host does not exist.
+Otherwise
+.Fa *ahost
+is set to the standard name of the host
+and a connection is established to a server
+residing at the well-known Internet port
+.Fa inport .
+.Pp
+If the connection succeeds,
+a socket in the Internet domain of type
+.Dv SOCK_STREAM
+is returned to the caller, and given to the remote
+command as 
+.Em stdin
+and
+.Em stdout .
+If
+.Fa fd2p
+is non-zero, then an auxiliary channel to a control
+process will be set up, and a descriptor for it will be placed
+in
+.Fa *fd2p .
+The control process will return diagnostic
+output from the command (unit 2) on this channel, and will also
+accept bytes on this channel as being
+.Tn UNIX
+signal numbers, to be
+forwarded to the process group of the command.
+If
+.Fa fd2p
+is 0, then the 
+.Em stderr
+(unit 2 of the remote
+command) will be made the same as the 
+.Em stdout
+and no
+provision is made for sending arbitrary signals to the remote process,
+although you may be able to get its attention by using out-of-band data.
+.Pp
+The protocol is described in detail in
+.Xr rshd 8 .
+.Pp
+The
+.Fn rresvport
+function is used to obtain a socket with a privileged
+address bound to it.  This socket is suitable for use
+by 
+.Fn rcmd
+and several other functions.  Privileged Internet ports are those
+in the range 0 to 1023.  Only the super-user
+is allowed to bind an address of this sort to a socket.
+.Pp
+The
+.Fn ruserok
+argument
+takes a remote host's name, as returned by the
+.Xr gethostbyaddr 3
+routine, two user names and a flag indicating whether
+the local user's name is that of the super-user.  Then,
+if the user is
+.Em NOT
+the super-user, it checks the files
+.Pa /etc/hosts.equiv .
+If that lookup is not done, or is unsuccessful, the
+.Pa .rhosts
+in the local user's home directory is checked to see if the request for
+service is allowed.  If this file is owned by anyone other than the
+user or the super-user, or if it is writeable by anyone other than the
+owner, the check automatically fails.  A 0 is returned if the machine
+name is listed in the
+.Dq Pa hosts.equiv
+file, or the host and remote
+user name are found in the
+.Dq Pa .rhosts
+file; otherwise
+.Fn ruserok
+returns \-1.
+If the local domain (as obtained from
+.Xr gethostname 2 )
+is the same as the remote domain, only the machine name need be specified.
+.Sh DIAGNOSTICS
+The
+.Fn rcmd
+function
+returns a valid socket descriptor on success.
+It returns \-1 on error and prints a diagnostic message on the standard error.
+.Pp
+The
+.Fn rresvport
+function
+returns a valid, bound socket descriptor on success.
+It returns \-1 on error with the global value
+.Va errno
+set according to the reason for failure.
+The error code
+.Dv EAGAIN
+is overloaded to mean ``All network ports in use.''
+.Sh SEE ALSO
+.Xr rlogin 1 ,
+.Xr rsh 1 ,
+.Xr intro 2 ,
+.Xr rexec 3 ,
+.Xr rexecd 8 ,
+.Xr rlogind 8 ,
+.Xr rshd 8
+.Sh HISTORY
+These
+functions appeared in 
+.Bx 4.2 .
diff --git a/lib/libc/net/rcmd.c b/lib/libc/net/rcmd.c
new file mode 100644
index 000000000000..d0cd18000ba9
--- /dev/null
+++ b/lib/libc/net/rcmd.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rcmd.c	5.24 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <string.h>
+
+rcmd(ahost, rport, locuser, remuser, cmd, fd2p)
+	char **ahost;
+	u_short rport;
+	const char *locuser, *remuser, *cmd;
+	int *fd2p;
+{
+	int s, timo = 1, pid;
+	long oldmask;
+	struct sockaddr_in sin, sin2, from;
+	char c;
+	int lport = IPPORT_RESERVED - 1;
+	struct hostent *hp;
+	fd_set reads;
+
+	pid = getpid();
+	hp = gethostbyname(*ahost);
+	if (hp == 0) {
+		herror(*ahost);
+		return (-1);
+	}
+	*ahost = hp->h_name;
+	oldmask = sigblock(sigmask(SIGURG));
+	for (;;) {
+		s = rresvport(&lport);
+		if (s < 0) {
+			if (errno == EAGAIN)
+				fprintf(stderr, "socket: All ports in use\n");
+			else
+				perror("rcmd: socket");
+			sigsetmask(oldmask);
+			return (-1);
+		}
+		fcntl(s, F_SETOWN, pid);
+		sin.sin_family = hp->h_addrtype;
+		bcopy(hp->h_addr_list[0], (caddr_t)&sin.sin_addr, hp->h_length);
+		sin.sin_port = rport;
+		if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0)
+			break;
+		(void) close(s);
+		if (errno == EADDRINUSE) {
+			lport--;
+			continue;
+		}
+		if (errno == ECONNREFUSED && timo <= 16) {
+			sleep(timo);
+			timo *= 2;
+			continue;
+		}
+		if (hp->h_addr_list[1] != NULL) {
+			int oerrno = errno;
+
+			fprintf(stderr,
+			    "connect to address %s: ", inet_ntoa(sin.sin_addr));
+			errno = oerrno;
+			perror(0);
+			hp->h_addr_list++;
+			bcopy(hp->h_addr_list[0], (caddr_t)&sin.sin_addr,
+			    hp->h_length);
+			fprintf(stderr, "Trying %s...\n",
+				inet_ntoa(sin.sin_addr));
+			continue;
+		}
+		perror(hp->h_name);
+		sigsetmask(oldmask);
+		return (-1);
+	}
+	lport--;
+	if (fd2p == 0) {
+		write(s, "", 1);
+		lport = 0;
+	} else {
+		char num[8];
+		int s2 = rresvport(&lport), s3;
+		int len = sizeof (from);
+
+		if (s2 < 0)
+			goto bad;
+		listen(s2, 1);
+		(void) sprintf(num, "%d", lport);
+		if (write(s, num, strlen(num)+1) != strlen(num)+1) {
+			perror("write: setting up stderr");
+			(void) close(s2);
+			goto bad;
+		}
+		FD_ZERO(&reads);
+		FD_SET(s, &reads);
+		FD_SET(s2, &reads);
+		errno = 0;
+		if (select(32, &reads, 0, 0, 0) < 1 ||
+		    !FD_ISSET(s2, &reads)) {
+			if (errno != 0)
+				perror("select: setting up stderr");
+			else
+			    fprintf(stderr,
+				"select: protocol failure in circuit setup.\n");
+			(void) close(s2);
+			goto bad;
+		}
+		s3 = accept(s2, (struct sockaddr *)&from, &len);
+		(void) close(s2);
+		if (s3 < 0) {
+			perror("accept");
+			lport = 0;
+			goto bad;
+		}
+		*fd2p = s3;
+		from.sin_port = ntohs((u_short)from.sin_port);
+		if (from.sin_family != AF_INET ||
+		    from.sin_port >= IPPORT_RESERVED ||
+		    from.sin_port < IPPORT_RESERVED / 2) {
+			fprintf(stderr,
+			    "socket: protocol failure in circuit setup.\n");
+			goto bad2;
+		}
+	}
+	(void) write(s, locuser, strlen(locuser)+1);
+	(void) write(s, remuser, strlen(remuser)+1);
+	(void) write(s, cmd, strlen(cmd)+1);
+	if (read(s, &c, 1) != 1) {
+		perror(*ahost);
+		goto bad2;
+	}
+	if (c != 0) {
+		while (read(s, &c, 1) == 1) {
+			(void) write(2, &c, 1);
+			if (c == '\n')
+				break;
+		}
+		goto bad2;
+	}
+	sigsetmask(oldmask);
+	return (s);
+bad2:
+	if (lport)
+		(void) close(*fd2p);
+bad:
+	(void) close(s);
+	sigsetmask(oldmask);
+	return (-1);
+}
+
+rresvport(alport)
+	int *alport;
+{
+	struct sockaddr_in sin;
+	int s;
+
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = INADDR_ANY;
+	s = socket(AF_INET, SOCK_STREAM, 0);
+	if (s < 0)
+		return (-1);
+	for (;;) {
+		sin.sin_port = htons((u_short)*alport);
+		if (bind(s, (struct sockaddr *)&sin, sizeof (sin)) >= 0)
+			return (s);
+		if (errno != EADDRINUSE) {
+			(void) close(s);
+			return (-1);
+		}
+		(*alport)--;
+		if (*alport == IPPORT_RESERVED/2) {
+			(void) close(s);
+			errno = EAGAIN;		/* close */
+			return (-1);
+		}
+	}
+}
+
+int	_check_rhosts_file = 1;
+
+ruserok(rhost, superuser, ruser, luser)
+	const char *rhost, *ruser, *luser;
+	int superuser;
+{
+	FILE *hostf;
+	char fhost[MAXHOSTNAMELEN];
+	int first = 1;
+	register char *sp, *p;
+	int baselen = -1;
+
+	sp = (char *)rhost;
+	p = fhost;
+	while (*sp) {
+		if (*sp == '.') {
+			if (baselen == -1)
+				baselen = sp - rhost;
+			*p++ = *sp++;
+		} else {
+			*p++ = isupper(*sp) ? tolower(*sp++) : *sp++;
+		}
+	}
+	*p = '\0';
+	hostf = superuser ? (FILE *)0 : fopen(_PATH_HEQUIV, "r");
+again:
+	if (hostf) {
+		if (!_validuser(hostf, fhost, luser, ruser, baselen)) {
+			(void) fclose(hostf);
+			return(0);
+		}
+		(void) fclose(hostf);
+	}
+	if (first == 1 && (_check_rhosts_file || superuser)) {
+		struct stat sbuf;
+		struct passwd *pwd;
+		char pbuf[MAXPATHLEN];
+
+		first = 0;
+		if ((pwd = getpwnam(luser)) == NULL)
+			return(-1);
+		(void)strcpy(pbuf, pwd->pw_dir);
+		(void)strcat(pbuf, "/.rhosts");
+		if ((hostf = fopen(pbuf, "r")) == NULL)
+			return(-1);
+		/*
+		 * if owned by someone other than user or root or if
+		 * writeable by anyone but the owner, quit
+		 */
+		if (fstat(fileno(hostf), &sbuf) ||
+		    sbuf.st_uid && sbuf.st_uid != pwd->pw_uid ||
+		    sbuf.st_mode&022) {
+			fclose(hostf);
+			return(-1);
+		}
+		goto again;
+	}
+	return (-1);
+}
+
+/* don't make static, used by lpd(8) */
+_validuser(hostf, rhost, luser, ruser, baselen)
+	char *rhost, *luser, *ruser;
+	FILE *hostf;
+	int baselen;
+{
+	register char *p;
+	char *user, ahost[MAXHOSTNAMELEN];
+	static int _checkhost();
+
+	while (fgets(ahost, sizeof (ahost), hostf)) {
+		p = ahost;
+		while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') {
+			*p = isupper(*p) ? tolower(*p) : *p;
+			p++;
+		}
+		if (*p == ' ' || *p == '\t') {
+			*p++ = '\0';
+			while (*p == ' ' || *p == '\t')
+				p++;
+			user = p;
+			while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0')
+				p++;
+		} else
+			user = p;
+		*p = '\0';
+		if (_checkhost(rhost, ahost, baselen) &&
+		    !strcmp(ruser, *user ? user : luser)) {
+			return (0);
+		}
+	}
+	return (-1);
+}
+
+static
+_checkhost(rhost, lhost, len)
+	char *rhost, *lhost;
+	int len;
+{
+	static char ldomain[MAXHOSTNAMELEN + 1];
+	static char *domainp = NULL;
+	static int nodomain = 0;
+	register char *cp;
+
+	if (len == -1)
+		return(!strcmp(rhost, lhost));
+	if (strncmp(rhost, lhost, len))
+		return(0);
+	if (!strcmp(rhost, lhost))
+		return(1);
+	if (*(lhost + len) != '\0')
+		return(0);
+	if (nodomain)
+		return(0);
+	if (!domainp) {
+		if (gethostname(ldomain, sizeof(ldomain)) == -1) {
+			nodomain = 1;
+			return(0);
+		}
+		ldomain[MAXHOSTNAMELEN] = NULL;
+		if ((domainp = index(ldomain, '.')) == (char *)NULL) {
+			nodomain = 1;
+			return(0);
+		}
+		for (cp = ++domainp; *cp; ++cp)
+			if (isupper(*cp))
+				*cp = tolower(*cp);
+	}
+	return(!strcmp(domainp, rhost + len +1));
+}
diff --git a/lib/libc/net/recv.c b/lib/libc/net/recv.c
new file mode 100644
index 000000000000..c6e632c9331e
--- /dev/null
+++ b/lib/libc/net/recv.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)recv.c	5.3 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+
+recv(s, buf, len, flags)
+	int s, len, flags;
+	void *buf;
+{
+	return(recvfrom(s, buf, len, flags, (struct sockaddr *)NULL, 0));
+}
diff --git a/lib/libc/net/res_comp.c b/lib/libc/net/res_comp.c
new file mode 100644
index 000000000000..42b2e8b6822a
--- /dev/null
+++ b/lib/libc/net/res_comp.c
@@ -0,0 +1,349 @@
+/*
+ * Copyright (c) 1985 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_comp.c	6.22 (Berkeley) 3/19/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <arpa/nameser.h>
+#include <netinet/in.h>
+#include <resolv.h>
+#include <stdio.h>
+
+static dn_find();
+
+/*
+ * Expand compressed domain name 'comp_dn' to full domain name.
+ * 'msg' is a pointer to the begining of the message,
+ * 'eomorig' points to the first location after the message,
+ * 'exp_dn' is a pointer to a buffer of size 'length' for the result.
+ * Return size of compressed name or -1 if there was an error.
+ */
+dn_expand(msg, eomorig, comp_dn, exp_dn, length)
+	const u_char *msg, *eomorig, *comp_dn;
+	u_char *exp_dn;
+	int length;
+{
+	register u_char *cp, *dn;
+	register int n, c;
+	u_char *eom;
+	int len = -1, checked = 0;
+
+	dn = exp_dn;
+	cp = (u_char *)comp_dn;
+	eom = exp_dn + length;
+	/*
+	 * fetch next label in domain name
+	 */
+	while (n = *cp++) {
+		/*
+		 * Check for indirection
+		 */
+		switch (n & INDIR_MASK) {
+		case 0:
+			if (dn != exp_dn) {
+				if (dn >= eom)
+					return (-1);
+				*dn++ = '.';
+			}
+			if (dn+n >= eom)
+				return (-1);
+			checked += n + 1;
+			while (--n >= 0) {
+				if ((c = *cp++) == '.') {
+					if (dn + n + 2 >= eom)
+						return (-1);
+					*dn++ = '\\';
+				}
+				*dn++ = c;
+				if (cp >= eomorig)	/* out of range */
+					return(-1);
+			}
+			break;
+
+		case INDIR_MASK:
+			if (len < 0)
+				len = cp - comp_dn + 1;
+			cp = (u_char *)msg + (((n & 0x3f) << 8) | (*cp & 0xff));
+			if (cp < msg || cp >= eomorig)	/* out of range */
+				return(-1);
+			checked += 2;
+			/*
+			 * Check for loops in the compressed name;
+			 * if we've looked at the whole message,
+			 * there must be a loop.
+			 */
+			if (checked >= eomorig - msg)
+				return (-1);
+			break;
+
+		default:
+			return (-1);			/* flag error */
+		}
+	}
+	*dn = '\0';
+	if (len < 0)
+		len = cp - comp_dn;
+	return (len);
+}
+
+/*
+ * Compress domain name 'exp_dn' into 'comp_dn'.
+ * Return the size of the compressed name or -1.
+ * 'length' is the size of the array pointed to by 'comp_dn'.
+ * 'dnptrs' is a list of pointers to previous compressed names. dnptrs[0]
+ * is a pointer to the beginning of the message. The list ends with NULL.
+ * 'lastdnptr' is a pointer to the end of the arrary pointed to
+ * by 'dnptrs'. Side effect is to update the list of pointers for
+ * labels inserted into the message as we compress the name.
+ * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
+ * is NULL, we don't update the list.
+ */
+dn_comp(exp_dn, comp_dn, length, dnptrs, lastdnptr)
+	const u_char *exp_dn;
+	u_char *comp_dn, **dnptrs, **lastdnptr;
+	int length;
+{
+	register u_char *cp, *dn;
+	register int c, l;
+	u_char **cpp, **lpp, *sp, *eob;
+	u_char *msg;
+
+	dn = (u_char *)exp_dn;
+	cp = comp_dn;
+	eob = cp + length;
+	if (dnptrs != NULL) {
+		if ((msg = *dnptrs++) != NULL) {
+			for (cpp = dnptrs; *cpp != NULL; cpp++)
+				;
+			lpp = cpp;	/* end of list to search */
+		}
+	} else
+		msg = NULL;
+	for (c = *dn++; c != '\0'; ) {
+		/* look to see if we can use pointers */
+		if (msg != NULL) {
+			if ((l = dn_find(dn-1, msg, dnptrs, lpp)) >= 0) {
+				if (cp+1 >= eob)
+					return (-1);
+				*cp++ = (l >> 8) | INDIR_MASK;
+				*cp++ = l % 256;
+				return (cp - comp_dn);
+			}
+			/* not found, save it */
+			if (lastdnptr != NULL && cpp < lastdnptr-1) {
+				*cpp++ = cp;
+				*cpp = NULL;
+			}
+		}
+		sp = cp++;	/* save ptr to length byte */
+		do {
+			if (c == '.') {
+				c = *dn++;
+				break;
+			}
+			if (c == '\\') {
+				if ((c = *dn++) == '\0')
+					break;
+			}
+			if (cp >= eob) {
+				if (msg != NULL)
+					*lpp = NULL;
+				return (-1);
+			}
+			*cp++ = c;
+		} while ((c = *dn++) != '\0');
+		/* catch trailing '.'s but not '..' */
+		if ((l = cp - sp - 1) == 0 && c == '\0') {
+			cp--;
+			break;
+		}
+		if (l <= 0 || l > MAXLABEL) {
+			if (msg != NULL)
+				*lpp = NULL;
+			return (-1);
+		}
+		*sp = l;
+	}
+	if (cp >= eob) {
+		if (msg != NULL)
+			*lpp = NULL;
+		return (-1);
+	}
+	*cp++ = '\0';
+	return (cp - comp_dn);
+}
+
+/*
+ * Skip over a compressed domain name. Return the size or -1.
+ */
+__dn_skipname(comp_dn, eom)
+	const u_char *comp_dn, *eom;
+{
+	register u_char *cp;
+	register int n;
+
+	cp = (u_char *)comp_dn;
+	while (cp < eom && (n = *cp++)) {
+		/*
+		 * check for indirection
+		 */
+		switch (n & INDIR_MASK) {
+		case 0:		/* normal case, n == len */
+			cp += n;
+			continue;
+		default:	/* illegal type */
+			return (-1);
+		case INDIR_MASK:	/* indirection */
+			cp++;
+		}
+		break;
+	}
+	return (cp - comp_dn);
+}
+
+/*
+ * Search for expanded name from a list of previously compressed names.
+ * Return the offset from msg if found or -1.
+ * dnptrs is the pointer to the first name on the list,
+ * not the pointer to the start of the message.
+ */
+static
+dn_find(exp_dn, msg, dnptrs, lastdnptr)
+	u_char *exp_dn, *msg;
+	u_char **dnptrs, **lastdnptr;
+{
+	register u_char *dn, *cp, **cpp;
+	register int n;
+	u_char *sp;
+
+	for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
+		dn = exp_dn;
+		sp = cp = *cpp;
+		while (n = *cp++) {
+			/*
+			 * check for indirection
+			 */
+			switch (n & INDIR_MASK) {
+			case 0:		/* normal case, n == len */
+				while (--n >= 0) {
+					if (*dn == '.')
+						goto next;
+					if (*dn == '\\')
+						dn++;
+					if (*dn++ != *cp++)
+						goto next;
+				}
+				if ((n = *dn++) == '\0' && *cp == '\0')
+					return (sp - msg);
+				if (n == '.')
+					continue;
+				goto next;
+
+			default:	/* illegal type */
+				return (-1);
+
+			case INDIR_MASK:	/* indirection */
+				cp = msg + (((n & 0x3f) << 8) | *cp);
+			}
+		}
+		if (*dn == '\0')
+			return (sp - msg);
+	next:	;
+	}
+	return (-1);
+}
+
+/*
+ * Routines to insert/extract short/long's. Must account for byte
+ * order and non-alignment problems. This code at least has the
+ * advantage of being portable.
+ *
+ * used by sendmail.
+ */
+
+u_short
+_getshort(msgp)
+	u_char *msgp;
+{
+	register u_char *p = (u_char *) msgp;
+#ifdef vax
+	/*
+	 * vax compiler doesn't put shorts in registers
+	 */
+	register u_long u;
+#else
+	register u_short u;
+#endif
+
+	u = *p++ << 8;
+	return ((u_short)(u | *p));
+}
+
+u_long
+_getlong(msgp)
+	u_char *msgp;
+{
+	register u_char *p = (u_char *) msgp;
+	register u_long u;
+
+	u = *p++; u <<= 8;
+	u |= *p++; u <<= 8;
+	u |= *p++; u <<= 8;
+	return (u | *p);
+}
+
+void
+#ifdef __STDC__
+__putshort(register u_short s, register u_char *msgp)
+#else
+__putshort(s, msgp)
+	register u_short s;
+	register u_char *msgp;
+#endif
+{
+	msgp[1] = s;
+	msgp[0] = s >> 8;
+}
+
+void
+__putlong(l, msgp)
+	register u_long l;
+	register u_char *msgp;
+{
+	msgp[3] = l;
+	msgp[2] = (l >>= 8);
+	msgp[1] = (l >>= 8);
+	msgp[0] = l >> 8;
+}
diff --git a/lib/libc/net/res_debug.c b/lib/libc/net/res_debug.c
new file mode 100644
index 000000000000..83dff2d382ca
--- /dev/null
+++ b/lib/libc/net/res_debug.c
@@ -0,0 +1,518 @@
+/*-
+ * Copyright (c) 1985, 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)res_debug.c	5.36 (Berkeley) 3/6/91
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_debug.c	5.36 (Berkeley) 3/6/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+
+void __fp_query();
+char *__p_class(), *__p_time(), *__p_type();
+static char *p_cdname(), *p_rr();
+
+char *_res_opcodes[] = {
+	"QUERY",
+	"IQUERY",
+	"CQUERYM",
+	"CQUERYU",
+	"4",
+	"5",
+	"6",
+	"7",
+	"8",
+	"UPDATEA",
+	"UPDATED",
+	"UPDATEDA",
+	"UPDATEM",
+	"UPDATEMA",
+	"ZONEINIT",
+	"ZONEREF",
+};
+
+char *_res_resultcodes[] = {
+	"NOERROR",
+	"FORMERR",
+	"SERVFAIL",
+	"NXDOMAIN",
+	"NOTIMP",
+	"REFUSED",
+	"6",
+	"7",
+	"8",
+	"9",
+	"10",
+	"11",
+	"12",
+	"13",
+	"14",
+	"NOCHANGE",
+};
+
+__p_query(msg)
+	char *msg;
+{
+	__fp_query(msg,stdout);
+}
+
+/*
+ * Print the contents of a query.
+ * This is intended to be primarily a debugging routine.
+ */
+void
+__fp_query(msg,file)
+	char *msg;
+	FILE *file;
+{
+	register char *cp;
+	register HEADER *hp;
+	register int n;
+
+	/*
+	 * Print header fields.
+	 */
+	hp = (HEADER *)msg;
+	cp = msg + sizeof(HEADER);
+	fprintf(file,"HEADER:\n");
+	fprintf(file,"\topcode = %s", _res_opcodes[hp->opcode]);
+	fprintf(file,", id = %d", ntohs(hp->id));
+	fprintf(file,", rcode = %s\n", _res_resultcodes[hp->rcode]);
+	fprintf(file,"\theader flags: ");
+	if (hp->qr)
+		fprintf(file," qr");
+	if (hp->aa)
+		fprintf(file," aa");
+	if (hp->tc)
+		fprintf(file," tc");
+	if (hp->rd)
+		fprintf(file," rd");
+	if (hp->ra)
+		fprintf(file," ra");
+	if (hp->pr)
+		fprintf(file," pr");
+	fprintf(file,"\n\tqdcount = %d", ntohs(hp->qdcount));
+	fprintf(file,", ancount = %d", ntohs(hp->ancount));
+	fprintf(file,", nscount = %d", ntohs(hp->nscount));
+	fprintf(file,", arcount = %d\n\n", ntohs(hp->arcount));
+	/*
+	 * Print question records.
+	 */
+	if (n = ntohs(hp->qdcount)) {
+		fprintf(file,"QUESTIONS:\n");
+		while (--n >= 0) {
+			fprintf(file,"\t");
+			cp = p_cdname(cp, msg, file);
+			if (cp == NULL)
+				return;
+			fprintf(file,", type = %s", __p_type(_getshort(cp)));
+			cp += sizeof(u_short);
+			fprintf(file,
+			    ", class = %s\n\n", __p_class(_getshort(cp)));
+			cp += sizeof(u_short);
+		}
+	}
+	/*
+	 * Print authoritative answer records
+	 */
+	if (n = ntohs(hp->ancount)) {
+		fprintf(file,"ANSWERS:\n");
+		while (--n >= 0) {
+			fprintf(file,"\t");
+			cp = p_rr(cp, msg, file);
+			if (cp == NULL)
+				return;
+		}
+	}
+	/*
+	 * print name server records
+	 */
+	if (n = ntohs(hp->nscount)) {
+		fprintf(file,"NAME SERVERS:\n");
+		while (--n >= 0) {
+			fprintf(file,"\t");
+			cp = p_rr(cp, msg, file);
+			if (cp == NULL)
+				return;
+		}
+	}
+	/*
+	 * print additional records
+	 */
+	if (n = ntohs(hp->arcount)) {
+		fprintf(file,"ADDITIONAL RECORDS:\n");
+		while (--n >= 0) {
+			fprintf(file,"\t");
+			cp = p_rr(cp, msg, file);
+			if (cp == NULL)
+				return;
+		}
+	}
+}
+
+static char *
+p_cdname(cp, msg, file)
+	char *cp, *msg;
+	FILE *file;
+{
+	char name[MAXDNAME];
+	int n;
+
+	if ((n = dn_expand((u_char *)msg, (u_char *)msg + 512, (u_char *)cp,
+	    (u_char *)name, sizeof(name))) < 0)
+		return (NULL);
+	if (name[0] == '\0') {
+		name[0] = '.';
+		name[1] = '\0';
+	}
+	fputs(name, file);
+	return (cp + n);
+}
+
+/*
+ * Print resource record fields in human readable form.
+ */
+static char *
+p_rr(cp, msg, file)
+	char *cp, *msg;
+	FILE *file;
+{
+	int type, class, dlen, n, c;
+	struct in_addr inaddr;
+	char *cp1, *cp2;
+
+	if ((cp = p_cdname(cp, msg, file)) == NULL)
+		return (NULL);			/* compression error */
+	fprintf(file,"\n\ttype = %s", __p_type(type = _getshort(cp)));
+	cp += sizeof(u_short);
+	fprintf(file,", class = %s", __p_class(class = _getshort(cp)));
+	cp += sizeof(u_short);
+	fprintf(file,", ttl = %s", __p_time(_getlong(cp)));
+	cp += sizeof(u_long);
+	fprintf(file,", dlen = %d\n", dlen = _getshort(cp));
+	cp += sizeof(u_short);
+	cp1 = cp;
+	/*
+	 * Print type specific data, if appropriate
+	 */
+	switch (type) {
+	case T_A:
+		switch (class) {
+		case C_IN:
+		case C_HS:
+			bcopy(cp, (char *)&inaddr, sizeof(inaddr));
+			if (dlen == 4) {
+				fprintf(file,"\tinternet address = %s\n",
+					inet_ntoa(inaddr));
+				cp += dlen;
+			} else if (dlen == 7) {
+				fprintf(file,"\tinternet address = %s",
+					inet_ntoa(inaddr));
+				fprintf(file,", protocol = %d", cp[4]);
+				fprintf(file,", port = %d\n",
+					(cp[5] << 8) + cp[6]);
+				cp += dlen;
+			}
+			break;
+		default:
+			cp += dlen;
+		}
+		break;
+	case T_CNAME:
+	case T_MB:
+	case T_MG:
+	case T_MR:
+	case T_NS:
+	case T_PTR:
+		fprintf(file,"\tdomain name = ");
+		cp = p_cdname(cp, msg, file);
+		fprintf(file,"\n");
+		break;
+
+	case T_HINFO:
+		if (n = *cp++) {
+			fprintf(file,"\tCPU=%.*s\n", n, cp);
+			cp += n;
+		}
+		if (n = *cp++) {
+			fprintf(file,"\tOS=%.*s\n", n, cp);
+			cp += n;
+		}
+		break;
+
+	case T_SOA:
+		fprintf(file,"\torigin = ");
+		cp = p_cdname(cp, msg, file);
+		fprintf(file,"\n\tmail addr = ");
+		cp = p_cdname(cp, msg, file);
+		fprintf(file,"\n\tserial = %ld", _getlong(cp));
+		cp += sizeof(u_long);
+		fprintf(file,"\n\trefresh = %s", __p_time(_getlong(cp)));
+		cp += sizeof(u_long);
+		fprintf(file,"\n\tretry = %s", __p_time(_getlong(cp)));
+		cp += sizeof(u_long);
+		fprintf(file,"\n\texpire = %s", __p_time(_getlong(cp)));
+		cp += sizeof(u_long);
+		fprintf(file,"\n\tmin = %s\n", __p_time(_getlong(cp)));
+		cp += sizeof(u_long);
+		break;
+
+	case T_MX:
+		fprintf(file,"\tpreference = %ld,",_getshort(cp));
+		cp += sizeof(u_short);
+		fprintf(file," name = ");
+		cp = p_cdname(cp, msg, file);
+		break;
+
+  	case T_TXT:
+		(void) fputs("\t\"", file);
+		cp2 = cp1 + dlen;
+		while (cp < cp2) {
+			if (n = (unsigned char) *cp++) {
+				for (c = n; c > 0 && cp < cp2; c--)
+					if (*cp == '\n') {
+					    (void) putc('\\', file);
+					    (void) putc(*cp++, file);
+					} else
+					    (void) putc(*cp++, file);
+			}
+		}
+		(void) fputs("\"\n", file);
+  		break;
+
+	case T_MINFO:
+		fprintf(file,"\trequests = ");
+		cp = p_cdname(cp, msg, file);
+		fprintf(file,"\n\terrors = ");
+		cp = p_cdname(cp, msg, file);
+		break;
+
+	case T_UINFO:
+		fprintf(file,"\t%s\n", cp);
+		cp += dlen;
+		break;
+
+	case T_UID:
+	case T_GID:
+		if (dlen == 4) {
+			fprintf(file,"\t%ld\n", _getlong(cp));
+			cp += sizeof(int);
+		}
+		break;
+
+	case T_WKS:
+		if (dlen < sizeof(u_long) + 1)
+			break;
+		bcopy(cp, (char *)&inaddr, sizeof(inaddr));
+		cp += sizeof(u_long);
+		fprintf(file,"\tinternet address = %s, protocol = %d\n\t",
+			inet_ntoa(inaddr), *cp++);
+		n = 0;
+		while (cp < cp1 + dlen) {
+			c = *cp++;
+			do {
+ 				if (c & 0200)
+					fprintf(file," %d", n);
+ 				c <<= 1;
+			} while (++n & 07);
+		}
+		putc('\n',file);
+		break;
+
+#ifdef ALLOW_T_UNSPEC
+	case T_UNSPEC:
+		{
+			int NumBytes = 8;
+			char *DataPtr;
+			int i;
+
+			if (dlen < NumBytes) NumBytes = dlen;
+			fprintf(file, "\tFirst %d bytes of hex data:",
+				NumBytes);
+			for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++)
+				fprintf(file, " %x", *DataPtr);
+			fputs("\n", file);
+			cp += dlen;
+		}
+		break;
+#endif /* ALLOW_T_UNSPEC */
+
+	default:
+		fprintf(file,"\t???\n");
+		cp += dlen;
+	}
+	if (cp != cp1 + dlen) {
+		fprintf(file,"packet size error (%#x != %#x)\n", cp, cp1+dlen);
+		cp = NULL;
+	}
+	fprintf(file,"\n");
+	return (cp);
+}
+
+static	char nbuf[40];
+
+/*
+ * Return a string for the type
+ */
+char *
+__p_type(type)
+	int type;
+{
+	switch (type) {
+	case T_A:
+		return("A");
+	case T_NS:		/* authoritative server */
+		return("NS");
+	case T_CNAME:		/* canonical name */
+		return("CNAME");
+	case T_SOA:		/* start of authority zone */
+		return("SOA");
+	case T_MB:		/* mailbox domain name */
+		return("MB");
+	case T_MG:		/* mail group member */
+		return("MG");
+	case T_MR:		/* mail rename name */
+		return("MR");
+	case T_NULL:		/* null resource record */
+		return("NULL");
+	case T_WKS:		/* well known service */
+		return("WKS");
+	case T_PTR:		/* domain name pointer */
+		return("PTR");
+	case T_HINFO:		/* host information */
+		return("HINFO");
+	case T_MINFO:		/* mailbox information */
+		return("MINFO");
+	case T_MX:		/* mail routing info */
+		return("MX");
+	case T_TXT:		/* text */
+		return("TXT");
+	case T_AXFR:		/* zone transfer */
+		return("AXFR");
+	case T_MAILB:		/* mail box */
+		return("MAILB");
+	case T_MAILA:		/* mail address */
+		return("MAILA");
+	case T_ANY:		/* matches any type */
+		return("ANY");
+	case T_UINFO:
+		return("UINFO");
+	case T_UID:
+		return("UID");
+	case T_GID:
+		return("GID");
+#ifdef ALLOW_T_UNSPEC
+	case T_UNSPEC:
+		return("UNSPEC");
+#endif /* ALLOW_T_UNSPEC */
+	default:
+		(void)sprintf(nbuf, "%d", type);
+		return(nbuf);
+	}
+}
+
+/*
+ * Return a mnemonic for class
+ */
+char *
+__p_class(class)
+	int class;
+{
+
+	switch (class) {
+	case C_IN:		/* internet class */
+		return("IN");
+	case C_HS:		/* hesiod class */
+		return("HS");
+	case C_ANY:		/* matches any class */
+		return("ANY");
+	default:
+		(void)sprintf(nbuf, "%d", class);
+		return(nbuf);
+	}
+}
+
+/*
+ * Return a mnemonic for a time to live
+ */
+char *
+__p_time(value)
+	u_long value;
+{
+	int secs, mins, hours;
+	register char *p;
+
+	if (value == 0) {
+		strcpy(nbuf, "0 secs");
+		return(nbuf);
+	}
+
+	secs = value % 60;
+	value /= 60;
+	mins = value % 60;
+	value /= 60;
+	hours = value % 24;
+	value /= 24;
+
+#define	PLURALIZE(x)	x, (x == 1) ? "" : "s"
+	p = nbuf;
+	if (value) {
+		(void)sprintf(p, "%d day%s", PLURALIZE(value));
+		while (*++p);
+	}
+	if (hours) {
+		if (value)
+			*p++ = ' ';
+		(void)sprintf(p, "%d hour%s", PLURALIZE(hours));
+		while (*++p);
+	}
+	if (mins) {
+		if (value || hours)
+			*p++ = ' ';
+		(void)sprintf(p, "%d min%s", PLURALIZE(mins));
+		while (*++p);
+	}
+	if (secs || ! (value || hours || mins)) {
+		if (value || hours || mins)
+			*p++ = ' ';
+		(void)sprintf(p, "%d sec%s", PLURALIZE(secs));
+	}
+	return(nbuf);
+}
diff --git a/lib/libc/net/res_init.c b/lib/libc/net/res_init.c
new file mode 100644
index 000000000000..fccfadf24669
--- /dev/null
+++ b/lib/libc/net/res_init.c
@@ -0,0 +1,192 @@
+/*-
+ * Copyright (c) 1985, 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_init.c	6.15 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * Resolver state default settings
+ */
+
+struct state _res = {
+	RES_TIMEOUT,               	/* retransmition time interval */
+	4,                         	/* number of times to retransmit */
+	RES_DEFAULT,			/* options flags */
+	1,                         	/* number of name servers */
+};
+
+/*
+ * Set up default settings.  If the configuration file exist, the values
+ * there will have precedence.  Otherwise, the server address is set to
+ * INADDR_ANY and the default domain name comes from the gethostname().
+ *
+ * The configuration file should only be used if you want to redefine your
+ * domain or run without a server on your machine.
+ *
+ * Return 0 if completes successfully, -1 on error
+ */
+res_init()
+{
+	register FILE *fp;
+	register char *cp, **pp;
+	register int n;
+	char buf[BUFSIZ];
+	int nserv = 0;    /* number of nameserver records read from file */
+	int haveenv = 0;
+	int havesearch = 0;
+
+	_res.nsaddr.sin_addr.s_addr = INADDR_ANY;
+	_res.nsaddr.sin_family = AF_INET;
+	_res.nsaddr.sin_port = htons(NAMESERVER_PORT);
+	_res.nscount = 1;
+
+	/* Allow user to override the local domain definition */
+	if ((cp = getenv("LOCALDOMAIN")) != NULL) {
+		(void)strncpy(_res.defdname, cp, sizeof(_res.defdname));
+		haveenv++;
+	}
+
+	if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) {
+	    /* read the config file */
+	    while (fgets(buf, sizeof(buf), fp) != NULL) {
+		/* read default domain name */
+		if (!strncmp(buf, "domain", sizeof("domain") - 1)) {
+		    if (haveenv)	/* skip if have from environ */
+			    continue;
+		    cp = buf + sizeof("domain") - 1;
+		    while (*cp == ' ' || *cp == '\t')
+			    cp++;
+		    if ((*cp == '\0') || (*cp == '\n'))
+			    continue;
+		    (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
+		    if ((cp = index(_res.defdname, '\n')) != NULL)
+			    *cp = '\0';
+		    havesearch = 0;
+		    continue;
+		}
+		/* set search list */
+		if (!strncmp(buf, "search", sizeof("search") - 1)) {
+		    if (haveenv)	/* skip if have from environ */
+			    continue;
+		    cp = buf + sizeof("search") - 1;
+		    while (*cp == ' ' || *cp == '\t')
+			    cp++;
+		    if ((*cp == '\0') || (*cp == '\n'))
+			    continue;
+		    (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);
+		    if ((cp = index(_res.defdname, '\n')) != NULL)
+			    *cp = '\0';
+		    /*
+		     * Set search list to be blank-separated strings
+		     * on rest of line.
+		     */
+		    cp = _res.defdname;
+		    pp = _res.dnsrch;
+		    *pp++ = cp;
+		    for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) {
+			    if (*cp == ' ' || *cp == '\t') {
+				    *cp = 0;
+				    n = 1;
+			    } else if (n) {
+				    *pp++ = cp;
+				    n = 0;
+			    }
+		    }
+		    /* null terminate last domain if there are excess */
+		    while (*cp != '\0' && *cp != ' ' && *cp != '\t')
+			    cp++;
+		    *cp = '\0';
+		    *pp++ = 0;
+		    havesearch = 1;
+		    continue;
+		}
+		/* read nameservers to query */
+		if (!strncmp(buf, "nameserver", sizeof("nameserver") - 1) &&
+		   nserv < MAXNS) {
+		    cp = buf + sizeof("nameserver") - 1;
+		    while (*cp == ' ' || *cp == '\t')
+			    cp++;
+		    if ((*cp == '\0') || (*cp == '\n'))
+			    continue;
+		    if ((_res.nsaddr_list[nserv].sin_addr.s_addr =
+			inet_addr(cp)) == (unsigned)-1) {
+			    _res.nsaddr_list[nserv].sin_addr.s_addr
+				= INADDR_ANY;
+			    continue;
+		    }
+		    _res.nsaddr_list[nserv].sin_family = AF_INET;
+		    _res.nsaddr_list[nserv].sin_port = htons(NAMESERVER_PORT);
+		    nserv++;
+		    continue;
+		}
+	    }
+	    if (nserv > 1) 
+		_res.nscount = nserv;
+	    (void) fclose(fp);
+	}
+	if (_res.defdname[0] == 0) {
+		if (gethostname(buf, sizeof(_res.defdname)) == 0 &&
+		   (cp = index(buf, '.')))
+			(void)strcpy(_res.defdname, cp + 1);
+	}
+
+	/* find components of local domain that might be searched */
+	if (havesearch == 0) {
+		pp = _res.dnsrch;
+		*pp++ = _res.defdname;
+		for (cp = _res.defdname, n = 0; *cp; cp++)
+			if (*cp == '.')
+				n++;
+		cp = _res.defdname;
+		for (; n >= LOCALDOMAINPARTS && pp < _res.dnsrch + MAXDFLSRCH;
+		    n--) {
+			cp = index(cp, '.');
+			*pp++ = ++cp;
+		}
+		*pp++ = 0;
+	}
+	_res.options |= RES_INIT;
+	return (0);
+}
diff --git a/lib/libc/net/res_mkquery.c b/lib/libc/net/res_mkquery.c
new file mode 100644
index 000000000000..9b9726f3b3f1
--- /dev/null
+++ b/lib/libc/net/res_mkquery.c
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 1985 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_mkquery.c	6.16 (Berkeley) 3/6/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * Form all types of queries.
+ * Returns the size of the result or -1.
+ */
+res_mkquery(op, dname, class, type, data, datalen, newrr, buf, buflen)
+	int op;			/* opcode of query */
+	const char *dname;		/* domain name */
+	int class, type;	/* class and type of query */
+	const char *data;		/* resource record data */
+	int datalen;		/* length of data */
+	const struct rrec *newrr;	/* new rr for modify or append */
+	char *buf;		/* buffer to put query */
+	int buflen;		/* size of buffer */
+{
+	register HEADER *hp;
+	register char *cp;
+	register int n;
+	char *dnptrs[10], **dpp, **lastdnptr;
+
+#ifdef DEBUG
+	if (_res.options & RES_DEBUG)
+		printf("res_mkquery(%d, %s, %d, %d)\n", op, dname, class, type);
+#endif DEBUG
+	/*
+	 * Initialize header fields.
+	 */
+	if ((buf == NULL) || (buflen < sizeof(HEADER)))
+		return(-1);
+	bzero(buf, sizeof(HEADER));
+	hp = (HEADER *) buf;
+	hp->id = htons(++_res.id);
+	hp->opcode = op;
+	hp->pr = (_res.options & RES_PRIMARY) != 0;
+	hp->rd = (_res.options & RES_RECURSE) != 0;
+	hp->rcode = NOERROR;
+	cp = buf + sizeof(HEADER);
+	buflen -= sizeof(HEADER);
+	dpp = dnptrs;
+	*dpp++ = buf;
+	*dpp++ = NULL;
+	lastdnptr = dnptrs + sizeof(dnptrs)/sizeof(dnptrs[0]);
+	/*
+	 * perform opcode specific processing
+	 */
+	switch (op) {
+	case QUERY:
+		if ((buflen -= QFIXEDSZ) < 0)
+			return(-1);
+		if ((n = dn_comp((u_char *)dname, (u_char *)cp, buflen,
+		    (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
+			return (-1);
+		cp += n;
+		buflen -= n;
+		__putshort(type, (u_char *)cp);
+		cp += sizeof(u_short);
+		__putshort(class, (u_char *)cp);
+		cp += sizeof(u_short);
+		hp->qdcount = htons(1);
+		if (op == QUERY || data == NULL)
+			break;
+		/*
+		 * Make an additional record for completion domain.
+		 */
+		buflen -= RRFIXEDSZ;
+		if ((n = dn_comp((u_char *)data, (u_char *)cp, buflen,
+		    (u_char **)dnptrs, (u_char **)lastdnptr)) < 0)
+			return (-1);
+		cp += n;
+		buflen -= n;
+		__putshort(T_NULL, (u_char *)cp);
+		cp += sizeof(u_short);
+		__putshort(class, (u_char *)cp);
+		cp += sizeof(u_short);
+		__putlong(0, (u_char *)cp);
+		cp += sizeof(u_long);
+		__putshort(0, (u_char *)cp);
+		cp += sizeof(u_short);
+		hp->arcount = htons(1);
+		break;
+
+	case IQUERY:
+		/*
+		 * Initialize answer section
+		 */
+		if (buflen < 1 + RRFIXEDSZ + datalen)
+			return (-1);
+		*cp++ = '\0';	/* no domain name */
+		__putshort(type, (u_char *)cp);
+		cp += sizeof(u_short);
+		__putshort(class, (u_char *)cp);
+		cp += sizeof(u_short);
+		__putlong(0, (u_char *)cp);
+		cp += sizeof(u_long);
+		__putshort(datalen, (u_char *)cp);
+		cp += sizeof(u_short);
+		if (datalen) {
+			bcopy(data, cp, datalen);
+			cp += datalen;
+		}
+		hp->ancount = htons(1);
+		break;
+
+#ifdef ALLOW_UPDATES
+	/*
+	 * For UPDATEM/UPDATEMA, do UPDATED/UPDATEDA followed by UPDATEA
+	 * (Record to be modified is followed by its replacement in msg.)
+	 */
+	case UPDATEM:
+	case UPDATEMA:
+
+	case UPDATED:
+		/*
+		 * The res code for UPDATED and UPDATEDA is the same; user
+		 * calls them differently: specifies data for UPDATED; server
+		 * ignores data if specified for UPDATEDA.
+		 */
+	case UPDATEDA:
+		buflen -= RRFIXEDSZ + datalen;
+		if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
+			return (-1);
+		cp += n;
+		__putshort(type, cp);
+                cp += sizeof(u_short);
+                __putshort(class, cp);
+                cp += sizeof(u_short);
+		__putlong(0, cp);
+		cp += sizeof(u_long);
+		__putshort(datalen, cp);
+                cp += sizeof(u_short);
+		if (datalen) {
+			bcopy(data, cp, datalen);
+			cp += datalen;
+		}
+		if ( (op == UPDATED) || (op == UPDATEDA) ) {
+			hp->ancount = htons(0);
+			break;
+		}
+		/* Else UPDATEM/UPDATEMA, so drop into code for UPDATEA */
+
+	case UPDATEA:	/* Add new resource record */
+		buflen -= RRFIXEDSZ + datalen;
+		if ((n = dn_comp(dname, cp, buflen, dnptrs, lastdnptr)) < 0)
+			return (-1);
+		cp += n;
+		__putshort(newrr->r_type, cp);
+                cp += sizeof(u_short);
+                __putshort(newrr->r_class, cp);
+                cp += sizeof(u_short);
+		__putlong(0, cp);
+		cp += sizeof(u_long);
+		__putshort(newrr->r_size, cp);
+                cp += sizeof(u_short);
+		if (newrr->r_size) {
+			bcopy(newrr->r_data, cp, newrr->r_size);
+			cp += newrr->r_size;
+		}
+		hp->ancount = htons(0);
+		break;
+
+#endif ALLOW_UPDATES
+	}
+	return (cp - buf);
+}
diff --git a/lib/libc/net/res_query.c b/lib/libc/net/res_query.c
new file mode 100644
index 000000000000..995be0e7f891
--- /dev/null
+++ b/lib/libc/net/res_query.c
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_query.c	5.11 (Berkeley) 3/6/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if PACKETSZ > 1024
+#define MAXPACKET	PACKETSZ
+#else
+#define MAXPACKET	1024
+#endif
+
+int h_errno;
+
+/*
+ * Formulate a normal query, send, and await answer.
+ * Returned answer is placed in supplied buffer "answer".
+ * Perform preliminary check of answer, returning success only
+ * if no error is indicated and the answer count is nonzero.
+ * Return the size of the response on success, -1 on error.
+ * Error number is left in h_errno.
+ * Caller must parse answer and determine whether it answers the question.
+ */
+res_query(name, class, type, answer, anslen)
+	char *name;		/* domain name */
+	int class, type;	/* class and type of query */
+	u_char *answer;		/* buffer to put answer */
+	int anslen;		/* size of answer buffer */
+{
+	char buf[MAXPACKET];
+	HEADER *hp;
+	int n;
+
+	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
+		return (-1);
+#ifdef DEBUG
+	if (_res.options & RES_DEBUG)
+		printf("res_query(%s, %d, %d)\n", name, class, type);
+#endif
+	n = res_mkquery(QUERY, name, class, type, (char *)NULL, 0, NULL,
+	    buf, sizeof(buf));
+
+	if (n <= 0) {
+#ifdef DEBUG
+		if (_res.options & RES_DEBUG)
+			printf("res_query: mkquery failed\n");
+#endif
+		h_errno = NO_RECOVERY;
+		return (n);
+	}
+	n = res_send(buf, n, (char *)answer, anslen);
+	if (n < 0) {
+#ifdef DEBUG
+		if (_res.options & RES_DEBUG)
+			printf("res_query: send error\n");
+#endif
+		h_errno = TRY_AGAIN;
+		return(n);
+	}
+
+	hp = (HEADER *) answer;
+	if (hp->rcode != NOERROR || ntohs(hp->ancount) == 0) {
+#ifdef DEBUG
+		if (_res.options & RES_DEBUG)
+			printf("rcode = %d, ancount=%d\n", hp->rcode,
+			    ntohs(hp->ancount));
+#endif
+		switch (hp->rcode) {
+			case NXDOMAIN:
+				h_errno = HOST_NOT_FOUND;
+				break;
+			case SERVFAIL:
+				h_errno = TRY_AGAIN;
+				break;
+			case NOERROR:
+				h_errno = NO_DATA;
+				break;
+			case FORMERR:
+			case NOTIMP:
+			case REFUSED:
+			default:
+				h_errno = NO_RECOVERY;
+				break;
+		}
+		return (-1);
+	}
+	return(n);
+}
+
+/*
+ * Formulate a normal query, send, and retrieve answer in supplied buffer.
+ * Return the size of the response on success, -1 on error.
+ * If enabled, implement search rules until answer or unrecoverable failure
+ * is detected.  Error number is left in h_errno.
+ * Only useful for queries in the same name hierarchy as the local host
+ * (not, for example, for host address-to-name lookups in domain in-addr.arpa).
+ */
+res_search(name, class, type, answer, anslen)
+	char *name;		/* domain name */
+	int class, type;	/* class and type of query */
+	u_char *answer;		/* buffer to put answer */
+	int anslen;		/* size of answer */
+{
+	register char *cp, **domain;
+	int n, ret, got_nodata = 0;
+	char *__hostalias();
+
+	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
+		return (-1);
+
+	errno = 0;
+	h_errno = HOST_NOT_FOUND;		/* default, if we never query */
+	for (cp = name, n = 0; *cp; cp++)
+		if (*cp == '.')
+			n++;
+	if (n == 0 && (cp = __hostalias(name)))
+		return (res_query(cp, class, type, answer, anslen));
+
+	/*
+	 * We do at least one level of search if
+	 *	- there is no dot and RES_DEFNAME is set, or
+	 *	- there is at least one dot, there is no trailing dot,
+	 *	  and RES_DNSRCH is set.
+	 */
+	if ((n == 0 && _res.options & RES_DEFNAMES) ||
+	   (n != 0 && *--cp != '.' && _res.options & RES_DNSRCH))
+	     for (domain = _res.dnsrch; *domain; domain++) {
+		ret = res_querydomain(name, *domain, class, type,
+		    answer, anslen);
+		if (ret > 0)
+			return (ret);
+		/*
+		 * If no server present, give up.
+		 * If name isn't found in this domain,
+		 * keep trying higher domains in the search list
+		 * (if that's enabled).
+		 * On a NO_DATA error, keep trying, otherwise
+		 * a wildcard entry of another type could keep us
+		 * from finding this entry higher in the domain.
+		 * If we get some other error (negative answer or
+		 * server failure), then stop searching up,
+		 * but try the input name below in case it's fully-qualified.
+		 */
+		if (errno == ECONNREFUSED) {
+			h_errno = TRY_AGAIN;
+			return (-1);
+		}
+		if (h_errno == NO_DATA)
+			got_nodata++;
+		if ((h_errno != HOST_NOT_FOUND && h_errno != NO_DATA) ||
+		    (_res.options & RES_DNSRCH) == 0)
+			break;
+	}
+	/*
+	 * If the search/default failed, try the name as fully-qualified,
+	 * but only if it contained at least one dot (even trailing).
+	 * This is purely a heuristic; we assume that any reasonable query
+	 * about a top-level domain (for servers, SOA, etc) will not use
+	 * res_search.
+	 */
+	if (n && (ret = res_querydomain(name, (char *)NULL, class, type,
+	    answer, anslen)) > 0)
+		return (ret);
+	if (got_nodata)
+		h_errno = NO_DATA;
+	return (-1);
+}
+
+/*
+ * Perform a call on res_query on the concatenation of name and domain,
+ * removing a trailing dot from name if domain is NULL.
+ */
+res_querydomain(name, domain, class, type, answer, anslen)
+	char *name, *domain;
+	int class, type;	/* class and type of query */
+	u_char *answer;		/* buffer to put answer */
+	int anslen;		/* size of answer */
+{
+	char nbuf[2*MAXDNAME+2];
+	char *longname = nbuf;
+	int n;
+
+#ifdef DEBUG
+	if (_res.options & RES_DEBUG)
+		printf("res_querydomain(%s, %s, %d, %d)\n",
+		    name, domain, class, type);
+#endif
+	if (domain == NULL) {
+		/*
+		 * Check for trailing '.';
+		 * copy without '.' if present.
+		 */
+		n = strlen(name) - 1;
+		if (name[n] == '.' && n < sizeof(nbuf) - 1) {
+			bcopy(name, nbuf, n);
+			nbuf[n] = '\0';
+		} else
+			longname = name;
+	} else
+		(void)sprintf(nbuf, "%.*s.%.*s",
+		    MAXDNAME, name, MAXDNAME, domain);
+
+	return (res_query(longname, class, type, answer, anslen));
+}
+
+char *
+__hostalias(name)
+	register const char *name;
+{
+	register char *C1, *C2;
+	FILE *fp;
+	char *file, *getenv(), *strcpy(), *strncpy();
+	char buf[BUFSIZ];
+	static char abuf[MAXDNAME];
+
+	file = getenv("HOSTALIASES");
+	if (file == NULL || (fp = fopen(file, "r")) == NULL)
+		return (NULL);
+	buf[sizeof(buf) - 1] = '\0';
+	while (fgets(buf, sizeof(buf), fp)) {
+		for (C1 = buf; *C1 && !isspace(*C1); ++C1);
+		if (!*C1)
+			break;
+		*C1 = '\0';
+		if (!strcasecmp(buf, name)) {
+			while (isspace(*++C1));
+			if (!*C1)
+				break;
+			for (C2 = C1 + 1; *C2 && !isspace(*C2); ++C2);
+			abuf[sizeof(abuf) - 1] = *C2 = '\0';
+			(void)strncpy(abuf, C1, sizeof(abuf) - 1);
+			fclose(fp);
+			return (abuf);
+		}
+	}
+	fclose(fp);
+	return (NULL);
+}
diff --git a/lib/libc/net/res_send.c b/lib/libc/net/res_send.c
new file mode 100644
index 000000000000..3f177f57a563
--- /dev/null
+++ b/lib/libc/net/res_send.c
@@ -0,0 +1,431 @@
+/*
+ * Copyright (c) 1985, 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)res_send.c	6.27 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Send query to name server and wait for reply.
+ */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <stdio.h>
+#include <errno.h>
+#include <resolv.h>
+#include <unistd.h>
+#include <string.h>
+
+static int s = -1;	/* socket used for communications */
+static struct sockaddr no_addr;
+
+#ifndef FD_SET
+#define	NFDBITS		32
+#define	FD_SETSIZE	32
+#define	FD_SET(n, p)	((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
+#define	FD_CLR(n, p)	((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
+#define	FD_ISSET(n, p)	((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
+#define FD_ZERO(p)	bzero((char *)(p), sizeof(*(p)))
+#endif
+
+res_send(buf, buflen, answer, anslen)
+	const char *buf;
+	int buflen;
+	char *answer;
+	int anslen;
+{
+	register int n;
+	int try, v_circuit, resplen, ns;
+	int gotsomewhere = 0, connected = 0;
+	int connreset = 0;
+	u_short id, len;
+	char *cp;
+	fd_set dsmask;
+	struct timeval timeout;
+	HEADER *hp = (HEADER *) buf;
+	HEADER *anhp = (HEADER *) answer;
+	struct iovec iov[2];
+	int terrno = ETIMEDOUT;
+	char junk[512];
+
+#ifdef DEBUG
+	if (_res.options & RES_DEBUG) {
+		printf("res_send()\n");
+		__p_query(buf);
+	}
+#endif DEBUG
+	if (!(_res.options & RES_INIT))
+		if (res_init() == -1) {
+			return(-1);
+		}
+	v_circuit = (_res.options & RES_USEVC) || buflen > PACKETSZ;
+	id = hp->id;
+	/*
+	 * Send request, RETRY times, or until successful
+	 */
+	for (try = 0; try < _res.retry; try++) {
+	   for (ns = 0; ns < _res.nscount; ns++) {
+#ifdef DEBUG
+		if (_res.options & RES_DEBUG)
+			printf("Querying server (# %d) address = %s\n", ns+1,
+			      inet_ntoa(_res.nsaddr_list[ns].sin_addr));
+#endif DEBUG
+	usevc:
+		if (v_circuit) {
+			int truncated = 0;
+
+			/*
+			 * Use virtual circuit;
+			 * at most one attempt per server.
+			 */
+			try = _res.retry;
+			if (s < 0) {
+				s = socket(AF_INET, SOCK_STREAM, 0);
+				if (s < 0) {
+					terrno = errno;
+#ifdef DEBUG
+					if (_res.options & RES_DEBUG)
+					    perror("socket (vc) failed");
+#endif DEBUG
+					continue;
+				}
+				if (connect(s,
+				    (struct sockaddr *)&(_res.nsaddr_list[ns]),
+				    sizeof(struct sockaddr)) < 0) {
+					terrno = errno;
+#ifdef DEBUG
+					if (_res.options & RES_DEBUG)
+					    perror("connect failed");
+#endif DEBUG
+					(void) close(s);
+					s = -1;
+					continue;
+				}
+			}
+			/*
+			 * Send length & message
+			 */
+			len = htons((u_short)buflen);
+			iov[0].iov_base = (caddr_t)&len;
+			iov[0].iov_len = sizeof(len);
+			iov[1].iov_base = (char *)buf;
+			iov[1].iov_len = buflen;
+			if (writev(s, iov, 2) != sizeof(len) + buflen) {
+				terrno = errno;
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					perror("write failed");
+#endif DEBUG
+				(void) close(s);
+				s = -1;
+				continue;
+			}
+			/*
+			 * Receive length & response
+			 */
+			cp = answer;
+			len = sizeof(short);
+			while (len != 0 &&
+			    (n = read(s, (char *)cp, (int)len)) > 0) {
+				cp += n;
+				len -= n;
+			}
+			if (n <= 0) {
+				terrno = errno;
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					perror("read failed");
+#endif DEBUG
+				(void) close(s);
+				s = -1;
+				/*
+				 * A long running process might get its TCP
+				 * connection reset if the remote server was
+				 * restarted.  Requery the server instead of
+				 * trying a new one.  When there is only one
+				 * server, this means that a query might work
+				 * instead of failing.  We only allow one reset
+				 * per query to prevent looping.
+				 */
+				if (terrno == ECONNRESET && !connreset) {
+					connreset = 1;
+					ns--;
+				}
+				continue;
+			}
+			cp = answer;
+			if ((resplen = ntohs(*(u_short *)cp)) > anslen) {
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					fprintf(stderr, "response truncated\n");
+#endif DEBUG
+				len = anslen;
+				truncated = 1;
+			} else
+				len = resplen;
+			while (len != 0 &&
+			   (n = read(s, (char *)cp, (int)len)) > 0) {
+				cp += n;
+				len -= n;
+			}
+			if (n <= 0) {
+				terrno = errno;
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					perror("read failed");
+#endif DEBUG
+				(void) close(s);
+				s = -1;
+				continue;
+			}
+			if (truncated) {
+				/*
+				 * Flush rest of answer
+				 * so connection stays in synch.
+				 */
+				anhp->tc = 1;
+				len = resplen - anslen;
+				while (len != 0) {
+					n = (len > sizeof(junk) ?
+					    sizeof(junk) : len);
+					if ((n = read(s, junk, n)) > 0)
+						len -= n;
+					else
+						break;
+				}
+			}
+		} else {
+			/*
+			 * Use datagrams.
+			 */
+			if (s < 0) {
+				s = socket(AF_INET, SOCK_DGRAM, 0);
+				if (s < 0) {
+					terrno = errno;
+#ifdef DEBUG
+					if (_res.options & RES_DEBUG)
+					    perror("socket (dg) failed");
+#endif DEBUG
+					continue;
+				}
+			}
+#if	BSD >= 43
+			/*
+			 * I'm tired of answering this question, so:
+			 * On a 4.3BSD+ machine (client and server,
+			 * actually), sending to a nameserver datagram
+			 * port with no nameserver will cause an
+			 * ICMP port unreachable message to be returned.
+			 * If our datagram socket is "connected" to the
+			 * server, we get an ECONNREFUSED error on the next
+			 * socket operation, and select returns if the
+			 * error message is received.  We can thus detect
+			 * the absence of a nameserver without timing out.
+			 * If we have sent queries to at least two servers,
+			 * however, we don't want to remain connected,
+			 * as we wish to receive answers from the first
+			 * server to respond.
+			 */
+			if (_res.nscount == 1 || (try == 0 && ns == 0)) {
+				/*
+				 * Don't use connect if we might
+				 * still receive a response
+				 * from another server.
+				 */
+				if (connected == 0) {
+			if (connect(s, (struct sockaddr *)&_res.nsaddr_list[ns],
+					    sizeof(struct sockaddr)) < 0) {
+#ifdef DEBUG
+						if (_res.options & RES_DEBUG)
+							perror("connect");
+#endif DEBUG
+						continue;
+					}
+					connected = 1;
+				}
+				if (send(s, buf, buflen, 0) != buflen) {
+#ifdef DEBUG
+					if (_res.options & RES_DEBUG)
+						perror("send");
+#endif DEBUG
+					continue;
+				}
+			} else {
+				/*
+				 * Disconnect if we want to listen
+				 * for responses from more than one server.
+				 */
+				if (connected) {
+					(void) connect(s, &no_addr,
+					    sizeof(no_addr));
+					connected = 0;
+				}
+#endif BSD
+				if (sendto(s, buf, buflen, 0,
+				    (struct sockaddr *)&_res.nsaddr_list[ns],
+				    sizeof(struct sockaddr)) != buflen) {
+#ifdef DEBUG
+					if (_res.options & RES_DEBUG)
+						perror("sendto");
+#endif DEBUG
+					continue;
+				}
+#if	BSD >= 43
+			}
+#endif
+
+			/*
+			 * Wait for reply
+			 */
+			timeout.tv_sec = (_res.retrans << try);
+			if (try > 0)
+				timeout.tv_sec /= _res.nscount;
+			if (timeout.tv_sec <= 0)
+				timeout.tv_sec = 1;
+			timeout.tv_usec = 0;
+wait:
+			FD_ZERO(&dsmask);
+			FD_SET(s, &dsmask);
+			n = select(s+1, &dsmask, (fd_set *)NULL,
+				(fd_set *)NULL, &timeout);
+			if (n < 0) {
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					perror("select");
+#endif DEBUG
+				continue;
+			}
+			if (n == 0) {
+				/*
+				 * timeout
+				 */
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					printf("timeout\n");
+#endif DEBUG
+#if BSD >= 43
+				gotsomewhere = 1;
+#endif
+				continue;
+			}
+			if ((resplen = recv(s, answer, anslen, 0)) <= 0) {
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					perror("recvfrom");
+#endif DEBUG
+				continue;
+			}
+			gotsomewhere = 1;
+			if (id != anhp->id) {
+				/*
+				 * response from old query, ignore it
+				 */
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG) {
+					printf("old answer:\n");
+					__p_query(answer);
+				}
+#endif DEBUG
+				goto wait;
+			}
+			if (!(_res.options & RES_IGNTC) && anhp->tc) {
+				/*
+				 * get rest of answer;
+				 * use TCP with same server.
+				 */
+#ifdef DEBUG
+				if (_res.options & RES_DEBUG)
+					printf("truncated answer\n");
+#endif DEBUG
+				(void) close(s);
+				s = -1;
+				v_circuit = 1;
+				goto usevc;
+			}
+		}
+#ifdef DEBUG
+		if (_res.options & RES_DEBUG) {
+			printf("got answer:\n");
+			__p_query(answer);
+		}
+#endif DEBUG
+		/*
+		 * If using virtual circuits, we assume that the first server
+		 * is preferred * over the rest (i.e. it is on the local
+		 * machine) and only keep that one open.
+		 * If we have temporarily opened a virtual circuit,
+		 * or if we haven't been asked to keep a socket open,
+		 * close the socket.
+		 */
+		if ((v_circuit &&
+		    ((_res.options & RES_USEVC) == 0 || ns != 0)) ||
+		    (_res.options & RES_STAYOPEN) == 0) {
+			(void) close(s);
+			s = -1;
+		}
+		return (resplen);
+	   }
+	}
+	if (s >= 0) {
+		(void) close(s);
+		s = -1;
+	}
+	if (v_circuit == 0)
+		if (gotsomewhere == 0)
+			errno = ECONNREFUSED;	/* no nameservers found */
+		else
+			errno = ETIMEDOUT;	/* no answer obtained */
+	else
+		errno = terrno;
+	return (-1);
+}
+
+/*
+ * This routine is for closing the socket if a virtual circuit is used and
+ * the program wants to close it.  This provides support for endhostent()
+ * which expects to close the socket.
+ *
+ * This routine is not expected to be user visible.
+ */
+_res_close()
+{
+	if (s != -1) {
+		(void) close(s);
+		s = -1;
+	}
+}
diff --git a/lib/libc/net/resolver.3 b/lib/libc/net/resolver.3
new file mode 100644
index 000000000000..2e57a671027a
--- /dev/null
+++ b/lib/libc/net/resolver.3
@@ -0,0 +1,323 @@
+.\" Copyright (c) 1985, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)resolver.3	6.9 (Berkeley) 7/29/91
+.\"
+.Dd July 29, 1991
+.Dt RESOLVER 3
+.Os BSD 4.3
+.Sh NAME
+.Nm res_query ,
+.Nm res_search ,
+.Nm res_mkquery ,
+.Nm res_send ,
+.Nm res_init ,
+.Nm dn_comp ,
+.Nm dn_expand
+.Nd resolver routines
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <netinet/in.h>
+.Fd #include <arpa/nameser.h>
+.Fd #include <resolv.h>
+.Fo res_query
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "u_char *answer"
+.Fa "int anslen"
+.Fc
+.Fo res_search
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "u_char *answer"
+.Fa "int anslen"
+.Fc
+.Fo res_mkquery
+.Fa "int op"
+.Fa "char *dname"
+.Fa "int class"
+.Fa "int type"
+.Fa "char *data"
+.Fa "int datalen"
+.Fa "struct rrec *newrr"
+.Fa "char *buf"
+.Fa "int buflen"
+.Fc
+.Fo res_send
+.Fa "char *msg"
+.Fa "int msglen"
+.Fa "char *answer"
+.Fa "int anslen"
+.Fc
+.Fn res_init 
+.Fo dn_comp
+.Fa "char *exp_dn"
+.Fa "char *comp_dn"
+.Fa "int length"
+.Fa "char **dnptrs"
+.Fa "char **lastdnptr"
+.Fc
+.Fo dn_expand
+.Fa "u_char *msg"
+.Fa "u_char *eomorig"
+.Fa "u_char *comp_dn"
+.Fa "u_char *exp_dn"
+.Fa "int length"
+.Fc
+.Sh DESCRIPTION
+These routines are used for making, sending and interpreting
+query and reply messages with Internet domain name servers.
+.Pp
+Global configuration and state information that is used by the
+resolver routines is kept in the structure
+.Em _res .
+Most of the values have reasonable defaults and can be ignored.
+Options
+stored in
+.Em _res.options
+are defined in
+.Pa resolv.h
+and are as follows.
+Options are stored as a simple bit mask containing the bitwise ``or''
+of the options enabled.
+.Bl -tag -width RES_DEFNAMES
+.It Dv RES_INIT
+True if the initial name server address and default domain name are
+initialized (i.e.,
+.Fn res_init
+has been called).
+.It Dv RES_DEBUG
+Print debugging messages.
+.It Dv RES_AAONLY
+Accept authoritative answers only.
+With this option,
+.Fn res_send
+should continue until it finds an authoritative answer or finds an error.
+Currently this is not implemented.
+.It Dv RES_USEVC
+Use
+.Tn TCP
+connections for queries instead of
+.Tn UDP
+datagrams.
+.It Dv RES_STAYOPEN
+Used with
+.Dv RES_USEVC
+to keep the
+.Tn TCP
+connection open between
+queries.
+This is useful only in programs that regularly do many queries.
+.Tn UDP
+should be the normal mode used.
+.It Dv RES_IGNTC
+Unused currently (ignore truncation errors, i.e., don't retry with
+.Tn TCP ) .
+.It Dv RES_RECURSE
+Set the recursion-desired bit in queries.
+This is the default.
+.Pf ( Fn res_send
+does not do iterative queries and expects the name server
+to handle recursion.)
+.It Dv RES_DEFNAMES
+If set,
+.Fn res_search
+will append the default domain name to single-component names
+(those that do not contain a dot).
+This option is enabled by default.
+.It Dv RES_DNSRCH
+If this option is set,
+.Fn res_search
+will search for host names in the current domain and in parent domains; see
+.Xr hostname 7 .
+This is used by the standard host lookup routine
+.Xr gethostbyname 3 .
+This option is enabled by default.
+.El
+.Pp
+The
+.Fn res_init
+routine
+reads the configuration file (if any; see
+.Xr resolver 5 )
+to get the default domain name,
+search list and
+the Internet address of the local name server(s).
+If no server is configured, the host running
+the resolver is tried.
+The current domain name is defined by the hostname
+if not specified in the configuration file;
+it can be overridden by the environment variable
+.Ev LOCALDOMAIN .
+Initialization normally occurs on the first call
+to one of the following routines.
+.Pp
+The
+.Fn res_query
+function provides an interface to the server query mechanism.
+It constructs a query, sends it to the local server,
+awaits a response, and makes preliminary checks on the reply.
+The query requests information of the specified
+.Fa type
+and
+.Fa class
+for the specified fully-qualified domain name
+.Fa dname .
+The reply message is left in the
+.Fa answer
+buffer with length
+.Fa anslen
+supplied by the caller.
+.Pp
+The
+.Fn res_search
+routine makes a query and awaits a response like
+.Fn res_query ,
+but in addition, it implements the default and search rules
+controlled by the
+.Dv RES_DEFNAMES
+and
+.Dv RES_DNSRCH
+options.
+It returns the first successful reply.
+.Pp
+The remaining routines are lower-level routines used by
+.Fn res_query .
+The
+.Fn res_mkquery
+function
+constructs a standard query message and places it in
+.Fa buf .
+It returns the size of the query, or \-1 if the query is
+larger than
+.Fa buflen .
+The query type
+.Fa op
+is usually
+.Dv QUERY ,
+but can be any of the query types defined in
+.Aq Pa arpa/nameser.h .
+The domain name for the query is given by
+.Fa dname .
+.Fa Newrr
+is currently unused but is intended for making update messages.
+.Pp
+The
+.Fn res_send
+routine
+sends a pre-formatted query and returns an answer.
+It will call
+.Fn res_init
+if
+.Dv RES_INIT
+is not set, send the query to the local name server, and
+handle timeouts and retries.
+The length of the reply message is returned, or
+\-1 if there were errors.
+.Pp
+The
+.Fn dn_comp
+function
+compresses the domain name
+.Fa exp_dn
+and stores it in
+.Fa comp_dn .
+The size of the compressed name is returned or \-1 if there were errors.
+The size of the array pointed to by
+.Fa comp_dn
+is given by
+.Fa length .
+The compression uses
+an array of pointers
+.Fa dnptrs
+to previously-compressed names in the current message.
+The first pointer points to
+to the beginning of the message and the list ends with
+.Dv NULL .
+The limit to the array is specified by
+.Fa lastdnptr .
+A side effect of
+.Fn dn_comp
+is to update the list of pointers for
+labels inserted into the message
+as the name is compressed.
+If
+.Em dnptr
+is
+.Dv NULL, names are not compressed.
+If
+.Fa lastdnptr
+is
+.Dv NULL ,
+the list of labels is not updated.
+.Pp
+The
+.Fn dn_expand
+entry
+expands the compressed domain name
+.Fa comp_dn
+to a full domain name
+The compressed name is contained in a query or reply message;
+.Fa msg
+is a pointer to the beginning of the message.
+The uncompressed name is placed in the buffer indicated by
+.Fa exp_dn
+which is of size
+.Fa length .
+The size of compressed name is returned or \-1 if there was an error.
+.Sh FILES
+.Bl -tag -width Pa
+/etc/resolv.conf
+The configuration file
+see
+.Xr resolver 5 .
+.El
+.Sh SEE ALSO
+.Xr gethostbyname 3 ,
+.Xr named 8 ,
+.Xr resolver 5 ,
+.Xr hostname 7 ,
+.Pp
+.%T RFC1032 ,
+.%T RFC1033 ,
+.%T RFC1034 ,
+.%T RFC1035 ,
+.%T RFC974
+.Rs
+.%T "Name Server Operations Guide for BIND"
+.Re
+.Sh HISTORY
+The
+.Nm
+function appeared in 
+.Bx 4.3 .
diff --git a/lib/libc/net/send.c b/lib/libc/net/send.c
new file mode 100644
index 000000000000..37c0bc4a92fe
--- /dev/null
+++ b/lib/libc/net/send.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)send.c	5.3 (Berkeley) 2/24/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+
+send(s, msg, len, flags)
+	int s, len, flags;
+	const void *msg;
+{
+	return(sendto(s, msg, len, flags, (struct sockaddr *)NULL, 0));
+}
diff --git a/lib/libc/net/sethostent.c b/lib/libc/net/sethostent.c
new file mode 100644
index 000000000000..8f82227fd630
--- /dev/null
+++ b/lib/libc/net/sethostent.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 1985 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)sethostent.c	6.9 (Berkeley) 3/19/91";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+
+void
+sethostent(stayopen)
+{
+	if (stayopen)
+		_res.options |= RES_STAYOPEN | RES_USEVC;
+}
+
+void
+endhostent()
+{
+	_res.options &= ~(RES_STAYOPEN | RES_USEVC);
+	_res_close();
+}