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If we are walking the IPv6 header chain and we hit an IPPROTO_NONE

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header, then don't try to pullup anything, because there is no next
header if we hit IPPROTO_NONE. Set ulp to a non-NULL value so the
search for an upper layer header terinates.

This is based on Pekka's diagnosis, but I chose a simpler fix.

PR:		115261
Submitted by:	Pekka Savola <pekkas@netcore.fi>
Reviewed by:	mlaier
MFC after:	2 weeks
This commit is contained in:
David Malone 2007-12-09 15:35:09 +00:00
parent dcdaad925d
commit 71bd9b9cf9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=174479
1 changed files with 6 additions and 3 deletions
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9
sys/netinet/ip_fw2.c
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@ -2535,9 +2535,12 @@ do { \
break;
case IPPROTO_NONE: /* RFC 2460 */
PULLUP_TO(hlen, ulp, struct ip6_ext);
/* Packet ends here. if ip6e_len!=0 octets
* must be ignored. */
/*
* Packet ends here, and IPv6 header has
* already been pulled up. If ip6e_len!=0
* then octets must be ignored.
*/
ulp = ip; /* non-NULL to get out of loop. */
break;
case IPPROTO_OSPFIGP: