diff options
Diffstat (limited to 'lib/libc/net/getnetbydns.c')
| -rw-r--r-- | lib/libc/net/getnetbydns.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/libc/net/getnetbydns.c b/lib/libc/net/getnetbydns.c index deca8c58fca5..b9cc29d5bfdb 100644 --- a/lib/libc/net/getnetbydns.c +++ b/lib/libc/net/getnetbydns.c @@ -304,6 +304,9 @@ _dns_getnetbyaddr(void *rval, void *cb_data, va_list ap) for (nn = 4, net2 = net; net2; net2 >>= 8) netbr[--nn] = net2 & 0xff; switch (nn) { + case 4: /* net was all-zero i.e. 0.0.0.0 */ + sprintf(qbuf, "0.0.0.0.in-addr.arpa"); + break; case 3: /* Class A */ sprintf(qbuf, "0.0.0.%u.in-addr.arpa", netbr[3]); break; |