aboutsummaryrefslogtreecommitdiff
path: root/contrib/isc-dhcp/README
diff options
context:
space:
mode:
authorDavid E. O'Brien <obrien@FreeBSD.org>2000-06-26 08:06:22 +0000
committerDavid E. O'Brien <obrien@FreeBSD.org>2000-06-26 08:06:22 +0000
commitee4f4a92db4ae44b88d19c3645502d159933b19b (patch)
treeec3f0e70f9b53e452616b0ada4af4616056c1884 /contrib/isc-dhcp/README
parentf1b2a73d600a397664f7e0bb0759d114e4bd9338 (diff)
downloadsrc-ee4f4a92db4ae44b88d19c3645502d159933b19b.tar.gz
src-ee4f4a92db4ae44b88d19c3645502d159933b19b.zip
Import Patchlevel 1 of the ISC 2.0 dhcp client.
Notes
Notes: svn path=/vendor/isc-dhcp/dist/; revision=62104
Diffstat (limited to 'contrib/isc-dhcp/README')
-rw-r--r--contrib/isc-dhcp/README525
1 files changed, 288 insertions, 237 deletions
diff --git a/contrib/isc-dhcp/README b/contrib/isc-dhcp/README
index 94a422be1e17..2c053a825ac0 100644
--- a/contrib/isc-dhcp/README
+++ b/contrib/isc-dhcp/README
@@ -1,74 +1,81 @@
- Internet Software Consortium
- Dynamic Host Configuration Protocol Distribution
- Version 2
- June 22, 1999
-
- README FILE
-
-You should read this file carefully before trying to install or use
-the ISC DHCP Distribution.
-
- TABLE OF CONTENTS
-
- 1 WHERE TO FIND DOCUMENTATION
- 2 RELEASE STATUS
- 3 BUILDING THE DHCP DISTRIBUTION
- 4 INSTALLING THE DHCP DISTRIBUTION
- 5 USING THE DHCP DISTRIBUTION
- 5.1 LINUX
- 5.1.1 SO_ATTACH_FILTER UNDECLARED
- 5.1.2 PROTOCOL NOT CONFIGURED
- 5.1.3 BROADCAST
- 5.1.4 FIREWALL RULES
- 5.1.5 IP BOOTP AGENT
- 5.1.6 MULTIPLE INTERFACES
- 5.2 SCO
- 5.3 HP-UX
- 5.4 ULTRIX
- 5.5 FreeBSD
- 5.6 NeXTSTEP
- 5.7 SOLARIS
- 6 SUPPORT
- 6.1 HOW TO REPORT BUGS
- 7 KNOWN BUGS
-
- WHERE TO FIND DOCUMENTATION
-
-Documentation for this software includes this README file, the
+<C><H4>Internet Software Consortium</H4></C>
+<C><H4>Dynamic Host Configuration Protocol Distribution</H4></C>
+<C><H4>Version 2 Patchlevel 1</H4></C>
+<C><H4>June 24, 2000</H4></C>
+
+<C><H4>README FILE</H4></C>
+
+<P>You should read this file carefully before trying to install or use
+the ISC DHCP Distribution.</P>
+
+<OL>
+<C><B>TABLE OF CONTENTS</B></C>
+<DL>
+<DT><A HREF="#1"1</A><DD>WHERE TO FIND DOCUMENTATION
+<DT><A HREF="#2"2</A><DD>RELEASE STATUS
+<DT><A HREF="#3"3</A><DD>BUILDING THE DHCP DISTRIBUTION
+<DT><A HREF="#4"4</A><DD>INSTALLING THE DHCP DISTRIBUTION
+<DT><A HREF="#5"5</A><DD>USING THE DHCP DISTRIBUTION
+<DL>
+<DT><A HREF="#5.1"5.1</A><DD>LINUX
+<DL>
+<DT><A HREF="#5.1.1"5.1.1</A><DD>SO_ATTACH_FILTER UNDECLARED
+<DT><A HREF="#5.1.2"5.1.2</A><DD>PROTOCOL NOT CONFIGURED
+<DT><A HREF="#5.1.3"5.1.3</A><DD>BROADCAST
+<DT><A HREF="#5.1.4"5.1.4</A><DD>FIREWALL RULES
+<DT><A HREF="#5.1.5"5.1.5</A><DD>IP BOOTP AGENT
+<DT><A HREF="#5.1.6"5.1.6</A><DD>MULTIPLE INTERFACES
+</DL>
+<DT><A HREF="#5.2"5.2</A><DD>SCO
+<DT><A HREF="#5.3"5.3</A><DD>HP-UX
+<DT><A HREF="#5.4"5.4</A><DD>ULTRIX
+<DT><A HREF="#5.5"5.5</A><DD>FreeBSD
+<DT><A HREF="#5.6"5.6</A><DD>NeXTSTEP
+<DT><A HREF="#5.7"5.7</A><DD>SOLARIS
+</DL>
+<DT><A HREF="#6"6</A><DD>SUPPORT
+<DL>
+<DT><A HREF="#6.1"6.1</A><DD>HOW TO REPORT BUGS
+</DL>
+<DT><A HREF="#7"7</A><DD>KNOWN BUGS
+
+<H4 ID="1">Where to find documentation</H4>
+
+<P>Documentation for this software includes this README file, the
RELNOTES file, and the manual pages, which are in the server, common,
client and relay subdirectories. Internet standards relating to the
DHCP protocol are stored in the doc subdirectory. You will have the
best luck reading the manual pages if you build this software and then
install it, although you can read them directly out of the
-distribution if you need to.
+distribution if you need to.</P>
-DHCP server documentation is in the dhcpd man page. Information about
+<P>DHCP server documentation is in the dhcpd man page. Information about
the DHCP server lease database is in the dhcpd.leases man page.
Server configuration documentation is in the dhcpd.conf man page as
well as the dhcp-options man page. A sample DHCP server
configuration is in the file server/dhcpd.conf. The source for the
dhcpd, dhcpd.leases and dhcpd.conf man pages is in the server/ sub-
directory in the distribution. The source for the dhcp-options.5
-man page is in the common/ subdirectory.
+man page is in the common/ subdirectory.</P>
-DHCP Client documentation is in the dhclient man page. DHCP client
+<P>DHCP Client documentation is in the dhclient man page. DHCP client
configuration documentation is in the dhclient.conf man page and the
dhcp-options man page. The DHCP client configuration script is
documented in the dhclient-script man page. The format of the DHCP
client lease database is documented in the dhclient.leases man page.
The source for all these man pages is in the client/ subdirectory in
the distribution. In addition, the dhcp-options man page should be
-referred to for information about DHCP options.
+referred to for information about DHCP options.</P>
-DHCP relay agent documentation is in the dhcrelay man page, the source
-for which is distributed in the relay/ subdirectory.
+<P>DHCP relay agent documentation is in the dhcrelay man page, the source
+for which is distributed in the relay/ subdirectory.</P>
-To read installed manual pages, use the man command. Type "man page"
+<P>To read installed manual pages, use the man command. Type "man page"
where page is the name of the manual page. This will only work if
you have installed the ISC DHCP distribution using the ``make install''
-command (described later).
+command (described later).</P>
-If you want to read manual pages that aren't installed, you can type
+<P>If you want to read manual pages that aren't installed, you can type
``nroff -man page |more'' where page is the filename of the
unformatted manual page. The filename of an unformatted manual page
is the name of the manual page, followed by '.', followed by some
@@ -76,75 +83,78 @@ number - 5 for documentation about files, and 8 for documentation
about programs. For example, to read the dhcp-options man page,
you would type ``nroff -man common/dhcp-options.5 |more'', assuming
your current working directory is the top level directory of the ISC
-DHCP Distribution.
+DHCP Distribution.</P>
-If you do not have the nroff command, you can type ``more catpage''
+<P>If you do not have the nroff command, you can type ``more catpage''
where catpage is the filename of the catted man page. Catted man
pages names are the name of the manual page followed by ".cat"
-followed by 5 or 8, as with unformatted manual pages.
+followed by 5 or 8, as with unformatted manual pages.</P>
-Please note that until you install the manual pages, the pathnames of
+<P>Please note that until you install the manual pages, the pathnames of
files to which they refer will not be correct for your operating
-system.
+system.</P>
- RELEASE STATUS
+<H4 ID="2">Release status</H4>
-This is the final release of Version 2 of the Internet Software
+<P>This is the final release of Version 2 of the Internet Software
Consortium DHCP Distribution. In version 2.0, this distribution
includes a DHCP server, a DHCP client, and a BOOTP/DHCP relay agent.
-This release is stable.
+This release is stable.</P>
-In this release, the server and relay agent currently work well on
+<P>In this release, the server and relay agent currently work well on
NetBSD, Linux after kernel version 2.0.30, FreeBSD, BSD/OS, Ultrix,
Digital Alpha OSF/1, Solaris and SunOS 4.1.4. On AIX, HPUX, IRIX and
Linux 2.0.30, only a single broadcast network interface is supported.
They also runs on QNX as long as only one broadcast network interface
is configured and a host route is added from that interface to the
-255.255.255.255 broadcast address.
+255.255.255.255 broadcast address.</P>
-The DHCP client currently only knows how to configure the network on
+<P>The DHCP client currently only knows how to configure the network on
NetBSD, FreeBSD, BSD/os, Linux, Solaris and NextStep. The client
depends on a system-dependent shell script to do network
configuration - support for other operating systems is simply a matter
-of porting this shell script to the new platform.
+of porting this shell script to the new platform.</P>
-If you wish to run the DHCP Distribution on Linux, please see the
+<P>If you wish to run the DHCP Distribution on Linux, please see the
Linux-specific notes later in this document. If you wish to run on an
SCO release, please see the SCO-specific notes later in this document.
You particularly need to read these notes if you intend to support
Windows 95 clients. If you are running a version of FreeBSD prior to
2.2, please read the note on FreeBSD. If you are running HP-UX or
Ultrix, please read the notes for those operating systems below.
-If you are running NeXTSTEP, please see the notes on NeXTSTEP below.
+If you are running NeXTSTEP, please see the notes on NeXTSTEP below.</P>
-If you start dhcpd and get a message, "no free bpf", that means you
+<P>If you start dhcpd and get a message, "no free bpf", that means you
need to configure the Berkeley Packet Filter into your operating
system kernel. On NetBSD, FreeBSD and BSD/os, type ``man bpf'' for
-information. On Digital Unix, type ``man pfilt''.
+information. On Digital Unix, type ``man pfilt''.</P>
+<H4 ID="3">Building the DHCP Distribution</H4>
- BUILDING THE DHCP DISTRIBUTION
+<P>To build the DHCP Distribution, unpack the compressed tar file using
+the tar utility and the gzip command - type something like:</P>
-To build the DHCP Distribution, unpack the compressed tar file using
-the tar utility and the gzip command - type something like:
+<BLOCKQUOTE>
+ zcat dhcp-2.0pl1.tar.gz |tar xvf -
+</BLOCKQUOTE>
- zcat dhcp-2.0b1pl29.tar.gz |tar xvf -
+<P>On BSD/OS, you have to type gzcat, not zcat, and you may run into
+similar problems on other operating systems.</P>
-On BSD/OS, you have to type gzcat, not zcat, and you may run into
-similar problems on other operating systems.
-
-Now, cd to the dhcp-2.0b1pl29 subdirectory that you've just created and
-configure the source tree by typing:
+<P>Now, cd to the dhcp-2.0pl1 subdirectory that you've just created and
+configure the source tree by typing:</P>
+<BLOCKQUOTE>
./configure
+</BLOCKQUOTE>
-If the configure utility can figure out what sort of system you're
+<P>If the configure utility can figure out what sort of system you're
running on, it will create a custom Makefile for you for that
system; otherwise, it will complain. If it can't figure out what
system you are using, that system is not supported - you are on
-your own.
+your own.</P>
-Once you've run configure, just type ``make'', and after a while
+<P>Once you've run configure, just type ``make'', and after a while
you should have a dhcp server. If you get compile errors on one
of the supported systems mentioned earlier, please let us know.
If you get warnings, it's not likely to be a problem - the DHCP
@@ -152,99 +162,126 @@ server compiles completely warning-free on as many architectures
as we can manage, but there are a few for which this is difficult.
If you get errors on a system not mentioned above, you will need
to do some programming or debugging on your own to get the DHCP
-Distribution working.
+Distribution working.</P>
- INSTALLING THE DHCP DISTRIBUTION
+<H4 ID="4">Installing the dhcp distribution</H4>
-Once you have successfully gotten the DHCP Distribution to build, you
+<P>Once you have successfully gotten the DHCP Distribution to build, you
can install it by typing ``make install''. If you already have an old
version of the DHCP Distribution installed, you may want to save it
-before typing ``make install''.
+before typing ``make install''.</P>
- USING THE DHCP DISTRIBUTION
+<H4 ID="5">Using the dhcp distribution</H4>
- LINUX
+<H4 ID="5.1">Linux</H4>
-There are three big LINUX issues: the all-ones broadcast address,
+<P>There are three big LINUX issues: the all-ones broadcast address,
Linux 2.1 ip_bootp_agent enabling, and operations with more than one
network interface. There are also two potential compilation/runtime
problems for Linux 2.1/2.2: the "SO_ATTACH_FILTER undeclared" problem
-and the "protocol not configured" problem.
+and the "protocol not configured" problem.</P>
- LINUX: SO_ATTACH_FILTER UNDECLARED
+<H4 ID="5.1.1">So_attach_filter undeclared</H4>
-In addition, there is a minor issue that we will mention here because
+<P>In addition, there is a minor issue that we will mention here because
this release is so close on the heels of the Linux 2.2 release: there
is a symlink in /usr/include that points at the linux asm headers. It
appears to be not uncommon that this link won't be updated correctly,
-in which case you'll get the following error when you try to build:
+in which case you'll get the following error when you try to build:</P>
+<BLOCKQUOTE>
lpf.c: In function `if_register_receive':
lpf.c:152: `SO_ATTACH_FILTER' undeclared (first use this function)
lpf.c:152: (Each undeclared identifier is reported only once
lpf.c:152: for each function it appears in.)
+</BLOCKQUOTE>
-The line numbers may be different, of course. If you see this
+<P>The line numbers may be different, of course. If you see this
header, your linux asm header link is probably bad, and you should
-make sure it's pointing to correct linux source directory.
+make sure it's pointing to correct linux source directory.</P>
- LINUX: PROTOCOL NOT CONFIGURED
+<H4 ID="5.1.2">Protocol not configured</H4>
-One additional Linux 2.1/2.2 issue: if you get the following message,
+<P>One additional Linux 2.1/2.2 issue: if you get the following message,
it's because your kernel doesn't have the linux packetfilter or raw
-packet socket configured:
-
- Set CONFIG_PACKET=y and CONFIG_FILTER=y in your kernel configuration
-
-If this happens, you need to edit your linux kernel .config file, set
-CONFIG_FILTER=y and CONFIG_PACKET=y, and rebuild your kernel. If the
-preceding sentence made no sense to you, ask your Linux vendor/guru
-for help - please don't ask us.
-
-If you set CONFIG_PACKET=m or CONFIG_FILTER=m, then you must tell the
+packet socket configured:</P>
+
+<BLOCKQUOTE>
+ Make sure CONFIG_PACKET (Packet socket) and CONFIG_FILTER (Socket
+ Filtering) are enabled in your kernel configuration
+</BLOCKQUOTE>
+
+<P>If this happens, you need to configure your Linux kernel to support
+Socket Filtering and the Packet socket. You can do this by typing
+``make config'', ``make menuconfig'' or ``make xconfig'', and then
+enabling the Packet socket and Socket Filtering options that you'll
+see displayed on the menu or in the questionnaire. You can also edit
+your linux kernel .config file directly: set CONFIG_FILTER=y and
+CONFIG_PACKET=y. If you do this, make sure you run ``make oldconfig''
+afterwards, so that the changes you've made are propogated to the
+kernel header files. After you've reconfigured, you need to type
+``make'' to build a new Linux kernel, and then install it in the
+appropriate place (probably /linux). Make sure to save a copy of your
+old /linux.</P>
+
+<P>If the preceding paragraph made no sense to you, ask your Linux
+vendor/guru for help - please don't ask us.</P>
+
+<P>If you set CONFIG_PACKET=m or CONFIG_FILTER=m, then you must tell the
kernel module loader to load the appropriate modules. If this doesn't
make sense to you, don't use CONFIG_whatever=m - use CONFIG_whatever=y.
Don't ask for help with this on the DHCP mailing list - it's a Linux
-kernel issue.
+kernel issue. This is probably not a problem with the most recent
+Linux 2.2.x kernels.</P>
- LINUX: BROADCAST
+<H4 ID="5.1.3">Broadcast</H4>
-In order for dhcpd to work correctly with picky DHCP clients (e.g.,
+<P>In order for dhcpd to work correctly with picky DHCP clients (e.g.,
Windows 95), it must be able to send packets with an IP destination
-address of 255.255.255.255. Unfortunately, Linux insists on changing
-255.255.255.255 into the local subnet broadcast address (here, that's
-192.5.5.223). This results in a DHCP protocol violation, and while
-many DHCP clients don't notice the problem, some (e.g., all Microsoft
-DHCP clients) do. Clients that have this problem will appear not to
-see DHCPOFFER messages from the server.
-
-It is possible to work around this problem on some versions of Linux
+address of 255.255.255.255. Unfortunately, Linux changes an IP
+destination of 255.255.255.255 into the local subnet broadcast address
+(here, that's 192.5.5.223). This isn't a problem on Linux 2.2 and
+later kernels, since we completely bypass the Linux IP stack, but on
+old versions of Linux 2.1 and all versions of Linux prior to 2.1, it
+is a problem - pickier DHCP clients connected to the same network as
+the ISC DHCP server or ISC relay agent will not see messages from the
+DHCP server.</P>
+
+<P>It is possible to work around this problem on some versions of Linux
by creating a host route from your network interface address to
255.255.255.255. The command you need to use to do this on Linux
-varies from version to version. The easiest version is:
+varies from version to version. The easiest version is:</P>
+<BLOCKQUOTE>
route add -host 255.255.255.255 dev eth0
+</BLOCKQUOTE>
-On some older Linux systems, you will get an error if you try to do
+<P>On some older Linux systems, you will get an error if you try to do
this. On those systems, try adding the following entry to your
-/etc/hosts file:
+/etc/hosts file:</P>
+<BLOCKQUOTE>
255.255.255.255 all-ones
+</BLOCKQUOTE>
-Then, try:
+<P>Then, try:</P>
+<BLOCKQUOTE>
route add -host all-ones dev eth0
+</BLOCKQUOTE>
-Another route that has worked for some users is:
+<P>Another route that has worked for some users is:</P>
+<BLOCKQUOTE>
route add -net 255.255.255.0 dev eth0
+</BLOCKQUOTE>
-If you are not using eth0 as your network interface, you should
-specify the network interface you *are* using in your route command.
+<P>If you are not using eth0 as your network interface, you should
+specify the network interface you *are* using in your route command.</P>
- LINUX: FIREWALL RULES
+<H4 ID="5.1.4">Firewall rules</H4>
-If you are running the DHCP server or client on a Linux system that's
+<P>If you are running the DHCP server or client on a Linux system that's
also acting as a firewall, you must be sure to allow DHCP packets
through the firewall - Linux firewalls make filtering decisions before
they make the forwarding decision, so they will filter packets that
@@ -255,19 +292,20 @@ port 68 to UDP port 67 through. They must also allow packets from
your local firewall's IP address and UDP port 67 through to any
address your DHCP server might serve on UDP port 68. Finally,
packets from relay agents on port 67 to the DHCP server on port 67,
-and vice versa, must be permitted.
+and vice versa, must be permitted.</P>
- LINUX: IP BOOTP AGENT
+<H4 ID="5.1.5">IP BOOTP agent</H4>
-Some versions of the Linux 2.1 kernel apparently prevent dhcpd from
-working unless you enable it by doing the following:
+<P>Some versions of the Linux 2.1 kernel apparently prevent dhcpd from
+working unless you enable it by doing the following:</P>
+<BLOCKQUOTE>
echo 1 >/proc/sys/net/ipv4/ip_bootp_agent
+</BLOCKQUOTE>
+<H4 ID="5.1.6">Multiple interfaces</H4>
- LINUX: MULTIPLE INTERFACES
-
-Very old versions of the Linux kernel do not provide a networking API
+<P>Very old versions of the Linux kernel do not provide a networking API
that allows dhcpd to operate correctly if the system has more than one
broadcast network interface. However, Linux 2.0 kernels with version
numbers greater than or equal to 2.0.31 add an API feature: the
@@ -275,85 +313,89 @@ SO_BINDTODEVICE socket option. If SO_BINDTODEVICE is present, it is
possible for dhcpd to operate on Linux with more than one network
interface. In order to take advantage of this, you must be running a
2.0.31 or greater kernel, and you must have 2.0.31 or later system
-headers installed *before* you build the DHCP Distribution.
+headers installed *before* you build the DHCP Distribution.</P>
-We have heard reports that you must still add routes to 255.255.255.255
+<P>We have heard reports that you must still add routes to 255.255.255.255
in order for the all-ones broadcast to work, even on 2.0.31 kernels.
In fact, you now need to add a route for each interface. Hopefully
-the Linux kernel gurus will get this straight eventually.
+the Linux kernel gurus will get this straight eventually.</P>
-Linux 2.1 and later kernels do not use SO_BINDTODEVICE or require the
+<P>Linux 2.1 and later kernels do not use SO_BINDTODEVICE or require the
broadcast address hack, but do support multiple interfaces, using the
-Linux Packet Filter.
+Linux Packet Filter.</P>
- SCO
+<H4 ID="5.2">SCO</H4>
-SCO has the same problem as Linux (described earlier). The thing is,
+<P>SCO has the same problem as Linux (described earlier). The thing is,
SCO *really* doesn't want to let you add a host route to the all-ones
broadcast address. One technique that has been successful on some
-versions of SCO is the very bizarre command:
+versions of SCO is the very bizarre command:</P>
+<BLOCKQUOTE>
ifconfig net0 alias 10.1.1.1 netmask 8.0.0.0
+</BLOCKQUOTE>
-Apparently this works because of an interaction between SCO's support
+<P>Apparently this works because of an interaction between SCO's support
for network classes and the weird netmask. The 10.* network is just a
dummy that can generally be assumed to be safe. Don't ask why this
works. Just try it. If it works for you, great. If not, SCO is
supposedly adding hooks to support real DHCP service in a future
release - I have this on good authority from the people at SCO who do
-*their* DHCP server and client.
+*their* DHCP server and client.</P>
- HP-UX
+<H4 ID="5.3">HP-UX</H4>
-HP-UX has the same problem with the all-ones broadcast address that
+<P>HP-UX has the same problem with the all-ones broadcast address that
SCO and Linux have. One user reported that adding the following to
/etc/rc.config.d/netconf helped (you may have to modify this to suit
-your local configuration):
+your local configuration):</P>
+<BLOCKQUOTE>
INTERFACE_NAME[0]=lan0
IP_ADDRESS[0]=1.1.1.1
SUBNET_MASK[0]=255.255.255.0
BROADCAST_ADDRESS[0]="255.255.255.255"
LANCONFIG_ARGS[0]="ether"
DHCP_ENABLE[0]=0
+</BLOCKQUOTE>
- ULTRIX
+<H4 ID="5.4">Ultrix</H4>
-Now that we have Ultrix packet filter support, the DHCP Distribution
+<P>Now that we have Ultrix packet filter support, the DHCP Distribution
on Ultrix should be pretty trouble-free. However, one thing you do
need to be aware of is that it now requires that the pfilt device be
configured into your kernel and present in /dev. If you type ``man
packetfilter'', you will get some information on how to configure your
kernel for the packet filter (if it isn't already) and how to make an
-entry for it in /dev.
+entry for it in /dev.</P>
- FreeBSD
+<H4 ID="5.5">FreeBSD</H4>
-Versions of FreeBSD prior to 2.2 have a bug in BPF support in that the
+<P>Versions of FreeBSD prior to 2.2 have a bug in BPF support in that the
ethernet driver swaps the ethertype field in the ethernet header
downstream from BPF, which corrupts the output packet. If you are
running a version of FreeBSD prior to 2.2, and you find that dhcpd
can't communicate with its clients, you should #define BROKEN_FREEBSD_BPF
-in site.h and recompile.
+in site.h and recompile.</P>
- NeXTSTEP
+<H4 ID="5.6">NeXTStep</H4>
-The NeXTSTEP support uses the NeXTSTEP Berkeley Packet Filter
+<P>The NeXTSTEP support uses the NeXTSTEP Berkeley Packet Filter
extension, which is not included in the base NextStep system. You
-must install this extension in order to get dhcpd or dhclient to work.
+must install this extension in order to get dhcpd or dhclient to work.</P>
- SOLARIS
+<H4 ID="5.7">Solaris</H4>
-One problem which has been observed and is not fixed in this
+<P>One problem which has been observed and is not fixed in this
patchlevel has to do with using DLPI on Solaris machines. The symptom
of this problem is that the DHCP server never receives any requests.
If you are using Solaris 2.6, and you encounter this symptom, and
you are running the DHCP server on a machine with a single broadcast
network interface, you may wish to edit the includes/site.h file and
uncomment the #define USE_SOCKETS line. Then type ``make clean;
-make''.
+make''.</P>
-The DHCP client on Solaris will only work with DLPI. If you run it
+<P>The DHCP client on Solaris will only work with DLPI. If you run it
and it just keeps saying it's sending DHCPREQUEST packets, but never
gets a response, you may be having DLPI trouble as described above.
If so, you are SOL. Also, because Solaris requires you to "plumb" an
@@ -362,9 +404,9 @@ either specify the name(s) of the interface(s) you want to configure
on the command line, or must plumb the interfaces prior to invoking
the DHCP client. This can be done with ``ifconfig iface plumb'',
where iface is the name of the interface (e.g., ``ifconfig hme0
-plumb'').
+plumb'').</P>
-It should be noted that Solaris versions from 2.6 onward include a
+<P>It should be noted that Solaris versions from 2.6 onward include a
DHCP client that you can run with ``/sbin/ifconfig iface dhcp start''
rather than using the ISC DHCP client. The feature set of the Solaris
client is different (not necessarily better or worse) than that of the
@@ -373,22 +415,22 @@ use that. Please do not ask for help in using the Solaris DHCP client
on Internet Software Consortium mailing lists - that's why you're
paying Sun the big bucks. If you're having a problem with the
Solaris client interoperating with the ISC dhcp server, that's another
-matter, but please check with Sun first.
+matter, but please check with Sun first.</P>
- SUPPORT
+<H4 ID="6">Support</H4>
-The Internet Software Consortium DHCP server is not a commercial
+<P>The Internet Software Consortium DHCP server is not a commercial
product, and is not supported in that sense. However, it has
attracted a fairly sizable following on the Internet, which means that
there are a lot of knowledgable users who may be able to help you if
you get stuck. These people generally read the dhcp-server@fugue.com
-mailing list.
+mailing list.</P>
-If you are going to use dhcpd, you should probably subscribe to the
+<P>If you are going to use dhcpd, you should probably subscribe to the
dhcp-server and dhcp-announce mailing lists. If you will be using
-dhclient, you should subscribe to the dhcp-client mailing list.
+dhclient, you should subscribe to the dhcp-client mailing list.</P>
-If you need help, you should ask on the dhcp-server or dhcp-client
+<P>If you need help, you should ask on the dhcp-server or dhcp-client
mailing list (or both) - whichever is appropriate to your
application. This includes reporting bugs. Please do not report
bugs in old software releases - fetch the latest release and see if
@@ -396,89 +438,98 @@ the bug is still in that copy of the software, and if it's not, _then_
report it. It's okay to report bugs in the latest patchlevel of a
major version that's not the most recent major version, though - for
example, if you're running 2.0, you don't have to upgrade to 3.0
-before you can report bugs.
+before you can report bugs.</P>
-PLEASE READ THIS README FILE CAREFULLY BEFORE REPORTING BUGS!
+<H4 ID="6.1">Please read this readme file carefully before reporting bugs!</H4>
+<H4>How to report bugs</H4>
- HOW TO REPORT BUGS
-
-When you report bugs, please provide us complete information. A list
+<P>When you report bugs, please provide us complete information. A list
of information we need follows. Please read it carefully, and put
all the information you can into your initial bug report, so that we
don't have to ask you any questions in order to figure out your
-problem.
-
- - The specific operating system name and version of the
- machine on which the DHCP server or client is running.
- - The specific operating system name and version of the
- machine on which the client is running, if you are having
- trouble getting a client working with the server.
- - If you're running Linux, the version number we care about is
- the kernel version and maybe the library version, not the
- distribution version - e.g., while we don't mind knowing
- that you're running Redhat version mumble.foo, we must know
- what kernel version you're running, and it helps if you can
- tell us what version of the C library you're running,
- although if you don't know that off the top of your head it
- may be hard for you to figure it out, so don't go crazy
- trying.
- - The specific version of the DHCP distribution you're
- running, for example 2.0b1pl19, not 2.0.
- - Please explain the problem carefully, thinking through what
- you're saying to ensure that you don't assume we know
- something about your situation that we don't know.
- - Include your dhcpd.conf and dhcpd.leases file if they're not
- huge (if they are huge, we may need them anyway, but don't
- send them until you're asked).
- - Include a log of your server or client running until it
- encounters the problem - for example, if you are having
- trouble getting some client to get an address, restart the
- server with the -d flag and then restart the client, and
- send us what the server prints. Likewise, with the client,
- include the output of the client as it fails to get an
- address or otherwise does the wrong thing. Do not leave
- out parts of the output that you think aren't interesting.
- - If the client or server is dumping core, please run the
- debugger and get a stack trace, and include that in your
- bug report. For example, if your debugger is gdb, do the
- following:
-
+problem.</P>
+
+<UL>
+<LI>The specific operating system name and version of the
+machine on which the DHCP server or client is running.
+<LI>The specific operating system name and version of the
+machine on which the client is running, if you are having
+trouble getting a client working with the server.
+<LI>If you're running Linux, the version number we care about is
+the kernel version and maybe the library version, not the
+distribution version - e.g., while we don't mind knowing
+that you're running Redhat version mumble.foo, we must know
+what kernel version you're running, and it helps if you can
+tell us what version of the C library you're running,
+although if you don't know that off the top of your head it
+may be hard for you to figure it out, so don't go crazy
+trying.
+<LI>The specific version of the DHCP distribution you're
+running, for example 2.0b1pl19, not 2.0.
+<LI>Please explain the problem carefully, thinking through what
+you're saying to ensure that you don't assume we know
+something about your situation that we don't know.
+<LI>Include your dhcpd.conf and dhcpd.leases file if they're not
+huge (if they are huge, we may need them anyway, but don't
+send them until you're asked).
+<LI>Include a log of your server or client running until it
+encounters the problem - for example, if you are having
+trouble getting some client to get an address, restart the
+server with the -d flag and then restart the client, and
+send us what the server prints. Likewise, with the client,
+include the output of the client as it fails to get an
+address or otherwise does the wrong thing. Do not leave
+out parts of the output that you think aren't interesting.
+<LI>If the client or server is dumping core, please run the
+debugger and get a stack trace, and include that in your
+bug report. For example, if your debugger is gdb, do the
+following:
+
+<BLOCKQUOTE>
gdb dhcpd dhcpd.core
(gdb) where
[...]
(gdb) quit
-
- This assumes that it's the dhcp server you're debugging, and
- that the core file is in dhcpd.core.
-
-PLEASE DO NOT send queries about non-isc clients to the dhcp-client
-mailing list. If you're asking about them on an ISC mailing list,
-it's probably because you're using the ISC DHCP server, so ask there.
-If you are having problems with a client whose executable is called
-dhcpcd, this is _not_ the ISC DHCP client, and we probably can't help
-you with it.
-
-Please see http://www.fugue.com/dhcp/lists for details on how to
-subscribe. If you don't have WorldWide Web access, you can send mail
-to dhcp-request@fugue.com and tell me which lists you want to
-subscribe to, but please use the web interface if you can, since I
-have to handle the -request mailing list manually, and I will give you
-the third degree if you make me do your subscription manually.
-
-PLEASE DO NOT SEND REQUESTS FOR SUPPORT DIRECTLY TO ME! The number of
-people using the DHCP Distribution is sufficiently large that if I
-take an interrupt every time any one of those people runs into
-trouble, I will never get any more coding done.
-
-PLEASE DO NOT CALL ME ON THE PHONE FOR SUPPORT! Answering the phone
-takes a lot more of my time and attention than answering email. If you
-do call me on the phone, I will tell you to send email to the mailing
-list, and I won't answer your question, so there's no point in doing
-it.
-
- KNOWN BUGS
-
-This release of the DHCP Distribution does not yet contain support for
+</BLOCKQUOTE>
+
+<P>This assumes that it's the dhcp server you're debugging, and
+that the core file is in dhcpd.core.</P>
+</UL>
+
+<P><EM>Please, <B>do not</B></EM> send queries about non-isc clients
+to the dhcp-client mailing list. If you're asking about them on an
+ISC mailing list, it's probably because you're using the ISC DHCP
+server, so ask there. If you are having problems with a client whose
+executable is called dhcpcd, this is <EM>not</EM> the ISC DHCP client,
+and we probably can't help you with it.</P>
+
+<P>Please see <A HREF="http://www.fugue.com/dhcp/lists">
+http://www.fugue.com/dhcp/lists</A> for details on how to subscribe.
+If you don't have WorldWide Web access, you can send mail to
+dhcp-request@fugue.com and tell me which lists you want to subscribe
+to, but please use the web interface if you can, since I have to
+handle the -request mailing list manually, and I will give you the
+third degree if you make me do your subscription manually.</P>
+
+<P><EM>Please do not send requests for help directly to the author!</EM>
+The number of people using the DHCP Distribution is sufficiently large
+that if we take an interrupt every time any one of those people runs into
+trouble, we will never get any more coding done.</P>
+
+<P><EM>Please do not call the author on the phone for support!</EM>
+Answering the phone takes a lot more time and attention than answering
+email. If you do call on the phone, you will be told to send email to
+the mailing list, so there's no point in doing it.</P>
+
+<P><B>Exception:</B> if you are a support customer, you already know
+how to get in touch with us. To become a support customer, see our
+<A HREF="/isc/ISC_HTML/services/support/index.phtml">Support web
+page</A>.
+
+<H4 ID="7">Known bugs</H4>
+
+<P>This release of the DHCP Distribution does not yet contain support for
DHCPINFORM. The Vendor Specific Data option is not supported. Site-
specific options are not supported. All of these are supported in the
-3.0 release of the DHCP distribution, which is now in beta testing.
+3.0 release of the DHCP distribution, which is now in beta testing.</P>
+