diff options
| -rw-r--r-- | sys/netinet/ip_icmp.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index 331fe81..62bcd7e 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -623,10 +623,23 @@ icmp_reflect(m) (struct sockaddr *)&icmpdst, m->m_pkthdr.rcvif); /* * The following happens if the packet was not addressed to us, - * and was received on an interface with no IP address. + * and was received on an interface with no IP address: + * We find the first AF_INET address on the first non-loopback + * interface. */ if (ia == NULL) - ia = TAILQ_FIRST(&in_ifaddrhead); + TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) + if ((ia->ia_ifp->if_flags & IFF_LOOPBACK) == 0) + break; + + /* + * If we still didn't find an address, punt. We could have an + * interface up and (and receiving packets) with no address. + */ + if (ia == NULL) { + m_freem(m); + goto done; + } match: t = IA_SIN(ia)->sin_addr; ip->ip_src = t; |
