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Handle packets to 255.255.255.255 like multicast packets. Fixes PR 7682 by 

Darren Reed.
This commit is contained in:
is 1999-12-13 17:04:11 +00:00
parent 0ad375dcca
commit 43aa150a4e
1 changed files with 9 additions and 4 deletions
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13
sys/netinet/ip_output.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ip_output.c,v 1.63 1999/12/13 15:17:20 itojun Exp $ */
/* $NetBSD: ip_output.c,v 1.64 1999/12/13 17:04:11 is Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -275,10 +275,12 @@ ip_output(m0, va_alist)
if (ro->ro_rt->rt_flags & RTF_GATEWAY)
dst = satosin(ro->ro_rt->rt_gateway);
}
if (IN_MULTICAST(ip->ip_dst.s_addr)) {
if (IN_MULTICAST(ip->ip_dst.s_addr) ||
(ip->ip_dst.s_addr == INADDR_BROADCAST)) {
struct in_multi *inm;
m->m_flags |= M_MCAST;
m->m_flags |= (ip->ip_dst.s_addr == INADDR_BROADCAST) ?
M_BCAST : M_MCAST;
/*
* IP destination address is multicast. Make sure "dst"
* still points to the address in "ro". (It may have been
@ -299,7 +301,10 @@ ip_output(m0, va_alist)
/*
* Confirm that the outgoing interface supports multicast.
*/
if ((ifp->if_flags & IFF_MULTICAST) == 0) {
if (((m->m_flags & M_MCAST) &&
(ifp->if_flags & IFF_MULTICAST) == 0) ||
((m->m_flags & M_BCAST) &&
(ifp->if_flags & IFF_BROADCAST) == 0)) {
ipstat.ips_noroute++;
error = ENETUNREACH;
goto bad;