Date: Sun, 3 Jan 2010 00:18:32 -0500 From: David Horn <dhorn2000@gmail.com> To: Qing Li <qing.li@bluecoat.com>, freebsd-current@freebsd.org Subject: netinet6/in6.c r201282 Message-ID: <25ff90d61001022118y3c2a4ddcr30fd5283af065346@mail.gmail.com>
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Qing --
I have been having some issues with local ipv6 routes to machines that
are supposed to be on-link (attached to the same ethernet switch as my
test FreeBSD 9.0 box, and in the same /64) not being able to be
accessed properly after r201282.
Simple ping6 to the host does not result in a echo response once the
ndp entries go stale. (from looking at ndp -a)
I noticed that there seems to be a missing /64 on the routing table
entry, and doing a "route get -inet6 $hostname" for a host that is
supposed to be on-link and in the same /64 results in a routing entry
that points to the default router instead of the appropriate route for
the /64.
I have attached both a working (route.good.txt) and broken
(route.bad.txt) routing table (from netstat -rWnfinet6)
Let me know if you want a tcpdump, or other configuration data.
I can get it to work again if I hack up in6.c (not a valid fix TTBOMK) like so:
Index: in6.c
===================================================================
--- in6.c (revision 201413)
+++ in6.c (working copy)
@@ -1766,8 +1766,6 @@
|| (ifp->if_flags & IFF_LOOPBACK))) {
error = ifa_add_loopback_route((struct ifaddr *)ia,
(struct sockaddr *)&ia->ia_addr);
- if (error == 0)
- ia->ia_flags |= IFA_RTSELF;
}
/* Add ownaddr as loopback rtentry, if necessary (ex. on p2p link). */
uname -a
FreeBSD la 9.0-CURRENT FreeBSD 9.0-CURRENT #15 r201407:201413: Sat Jan
2 22:36:31 EST 2010 dhorn@la:/usr/obj/usr/src/sys/DHORN amd64
--Thanks!
---Dave Horn
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