diff options
| -rw-r--r-- | usr.sbin/mrouted/igmp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/usr.sbin/mrouted/igmp.c b/usr.sbin/mrouted/igmp.c index 6ae59323cf8..2f16c1f6ba1 100644 --- a/usr.sbin/mrouted/igmp.c +++ b/usr.sbin/mrouted/igmp.c @@ -150,7 +150,7 @@ accept_igmp(int recvlen) } iphdrlen = ip->ip_hl << 2; - ipdatalen = ntohs(ip->ip_len); + ipdatalen = ntohs(ip->ip_len) - iphdrlen; if (iphdrlen + ipdatalen != recvlen) { logit(LOG_WARNING, 0, "received packet from %s shorter (%u bytes) than hdr+data length (%u+%u)", |