Note that when ip_output() is called from ip_forward(), it will already

have its options inserted, so the opt argument to ip_output() must be NULL.
svn path=/head/; revision=121972
2003-11-03 18:03:05 +00:00 · 2003-11-03 18:03:05 +00:00 · 3de758d3e3 · 2020-12-20 02:59:44 +00:00
commit 3de758d3e3
parent eecfe773aa
1 changed files with 2 additions and 0 deletions
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@ -126,6 +126,8 @@ extern	struct protosw inetsw[];
 * header (with len, off, ttl, proto, tos, src, dst).
 * The mbuf chain containing the packet will be freed.
 * The mbuf opt, if present, will not be freed.
+ * In the IP forwarding case, the packet will arrive with options already
+ * inserted, so must have a NULL opt pointer.
 */
 int
 ip_output(struct mbuf *m0, struct mbuf *opt, struct route *ro,