UDP6 Multicast Bug found in kernel.
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In trying to get dhcpv6 running on my new router, I found that udp6 multicasct
packets weren't being delivered to userland clients. I could see them via a
non-promiscuous tcpdump, I could ping the multicast address while the process
using it was active, and I could see the associations via ifmcstatus.
I looked in the kernel and found something suspicious. Attached is a patch.
Let me know what you think.
Kyle
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=46rom 96cba86ef2bbee7892238be165b1ef6c14bf3b38 Mon Sep 17 00:00:00 2001
=46rom: Kyle Butt <kyle@vidanueva.greenhatgeek.net>
Date: Sat, 27 Jun 2009 00:15:07 -0400
Subject: [PATCH] Skip placemarker PCB's instead of looking for them.
Fixes UDP6 multicast
Compared with other PCB loops including UDP6 unicast and
UDP4 multicast.
---
sys/netinet6/udp6_usrreq.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/sys/netinet6/udp6_usrreq.c b/sys/netinet6/udp6_usrreq.c
index 0b33627..748429b 100644
--- a/sys/netinet6/udp6_usrreq.c
+++ b/sys/netinet6/udp6_usrreq.c
@@ -231,7 +231,7 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
*/
last =3D NULL;
LIST_FOREACH(in6p, &udbinfo.pcblisthead, inp_list) {
- if (!(in6p->inp_flags & INP_PLACEMARKER))
+ if (in6p->inp_flags & INP_PLACEMARKER)
continue;
if (!(in6p->inp_vflag & INP_IPV6))
continue;
--=20
1.6.2.5
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