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More fixing of multiple addresses in the same prefix. This time do not try

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to arp resolve "secondary" local addresses.

Found and submitted by:	ru
With additions from:	OpenBSD (rev. 1.47)
Reviewed by:		ru
This commit is contained in:
Max Laier 2004-12-09 00:12:41 +00:00
parent 1657488232
commit 067a8bab8a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=138615
1 changed files with 20 additions and 2 deletions
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22
sys/netinet/if_ether.c
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@ -162,6 +162,8 @@ arp_rtrequest(req, rt, info)
struct sockaddr *gate;
struct llinfo_arp *la;
static struct sockaddr_dl null_sdl = {sizeof(null_sdl), AF_LINK};
struct in_ifaddr *ia;
struct ifaddr *ifa;
RT_LOCK_ASSERT(rt);
@ -250,8 +252,13 @@ arp_rtrequest(req, rt, info)
}
#endif
if (SIN(rt_key(rt))->sin_addr.s_addr ==
(IA_SIN(rt->rt_ifa))->sin_addr.s_addr) {
TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
if (ia->ia_ifp == rt->rt_ifp &&
SIN(rt_key(rt))->sin_addr.s_addr ==
(IA_SIN(ia))->sin_addr.s_addr)
break;
}
if (ia) {
/*
* This test used to be
* if (loif.if_flags & IFF_UP)
@ -268,6 +275,17 @@ arp_rtrequest(req, rt, info)
if (useloopback)
rt->rt_ifp = loif;
/*
* make sure to set rt->rt_ifa to the interface
* address we are using, otherwise we will have trouble
* with source address selection.
*/
ifa = &ia->ia_ifa;
if (ifa != rt->rt_ifa) {
IFAFREE(rt->rt_ifa);
IFAREF(ifa);
rt->rt_ifa = ifa;
}
}
break;