Fix improper L4 header handling for IPv6 packets passed via DLT_RAW.

Reported by: Emil Muratov <gpm@hotplug.ru> Reviewed by: glebius Approved by: ae(mentor) MFC after: 1 week
freebsd · Jun 16, 2012 · 4410e0b · 4410e0b
1 parent 342df23
commit 4410e0b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sys/netgraph/netflow/ng_netflow.c b/sys/netgraph/netflow/ng_netflow.c
@@ -712,7 +712,7 @@ ng_netflow_rcvdata (hook_p hook, item_p item)
 		if (ip->ip_v == IP6VERSION) {
 			/* IPv6 packet */
 			ip = NULL;
-			M_CHECK(sizeof(struct ip6_hdr));
+			M_CHECK(sizeof(struct ip6_hdr) - sizeof(struct ip));
 			ip6 = mtod(m, struct ip6_hdr *);
 		}
 #endif