diff options
Diffstat (limited to 'sys/netinet/ip_output.c')
| -rw-r--r-- | sys/netinet/ip_output.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c index e292b60..3e592c5 100644 --- a/sys/netinet/ip_output.c +++ b/sys/netinet/ip_output.c @@ -323,6 +323,9 @@ again: } else { mtu = ifp->if_mtu; } + /* Catch a possible divide by zero later. */ + KASSERT(mtu > 0, ("%s: mtu %d <= 0, rte=%p (rt_flags=0x%08x) ifp=%p", + __func__, mtu, rte, (rte != NULL) ? rte->rt_flags : 0, ifp)); if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) { m->m_flags |= M_MCAST; /* |
