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Ignore RTN_UNSPEC, possible with -e and -S. Fixes #2955

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dmiller
2025-10-14 18:43:59 +00:00
parent fcf6f0cb19
commit 3a39ec6d9b
1 changed files with 6 additions and 1 deletions
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7
libnetutil/netutil.cc
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@@ -3313,7 +3313,7 @@ static int route_dst_netlink(const struct sockaddr_storage *dst,
len -= NLMSG_LENGTH(sizeof(*nlmsg)); len -= NLMSG_LENGTH(sizeof(*nlmsg));
/* See rtnetlink(7). Anything matching this route is actually unroutable. */ /* See rtnetlink(7). Anything matching this route is actually unroutable. */
if (rtmsg->rtm_type == RTN_UNREACHABLE || rtmsg->rtm_type == RTN_UNSPEC if (rtmsg->rtm_type == RTN_UNREACHABLE
|| rtmsg->rtm_type == RTN_BLACKHOLE || rtmsg->rtm_type == RTN_PROHIBIT) || rtmsg->rtm_type == RTN_BLACKHOLE || rtmsg->rtm_type == RTN_PROHIBIT)
return 0; return 0;
@@ -3353,6 +3353,11 @@ static int route_dst_netlink(const struct sockaddr_storage *dst,
if (ii != NULL) { if (ii != NULL) {
rnfo->ii = *ii; rnfo->ii = *ii;
if (rnfo->srcaddr.ss_family == AF_UNSPEC) {
assert(!spoofss);
assert(rnfo->ii.addr.ss_family == dst->ss_family);
rnfo->srcaddr = rnfo->ii.addr;
}
return 1; return 1;
} else { } else {
return 0; return 0;