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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[-- Attachment #1 --]
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
[-- Attachment #2 --]
Routing tables
Internet6:
Destination Gateway Flags Refs Use Mtu Netif Expire
::/96 ::1 UGRS 0 0 16384 lo0 =>
default fe80::224:1ff:fe43:21e6%bfe0 UG 0 0 1500 bfe0
::1 ::1 UH 0 2 16384 lo0
::ffff:0.0.0.0/96 ::1 UGRS 0 0 16384 lo0
2001:470:8:584:: link#2 UH 0 0 1500 bfe0
2001:470:8:584::aa link#2 UHS 0 0 16384 lo0
fe80::/10 ::1 UGRS 0 0 16384 lo0
fe80::%bfe0 link#2 UH 0 0 1500 bfe0
fe80::21c:23ff:fe98:2c5d%bfe0 link#2 UHS 0 0 16384 lo0
fe80::%lo0 link#5 UH 0 0 16384 lo0
fe80::1%lo0 link#5 UHS 0 0 16384 lo0
ff01:2::/32 fe80::21c:23ff:fe98:2c5d%bfe0 U 0 0 1500 bfe0
ff01:5::/32 ::1 U 0 0 16384 lo0
ff02::/16 ::1 UGRS 0 0 16384 lo0
ff02::%bfe0/32 fe80::21c:23ff:fe98:2c5d%bfe0 U 0 0 1500 bfe0
ff02::%lo0/32 ::1 U 0 0 16384 lo0
[-- Attachment #3 --]
Routing tables
Internet6:
Destination Gateway Flags Refs Use Mtu Netif Expire
::/96 ::1 UGRS 0 0 16384 lo0 =>
default fe80::224:1ff:fe43:21e6%bfe0 UG 0 0 1500 bfe0
::1 ::1 UH 0 2 16384 lo0
::ffff:0.0.0.0/96 ::1 UGRS 0 0 16384 lo0
2001:470:8:584::/64 link#2 U 0 0 1500 bfe0
2001:470:8:584::aa link#2 UHS 0 0 16384 lo0
fe80::/10 ::1 UGRS 0 0 16384 lo0
fe80::%bfe0/64 link#2 U 0 0 1500 bfe0
fe80::21c:23ff:fe98:2c5d%bfe0 link#2 UHS 0 0 16384 lo0
fe80::%lo0/64 link#5 U 0 0 16384 lo0
fe80::1%lo0 link#5 UHS 0 0 16384 lo0
ff01:2::/32 fe80::21c:23ff:fe98:2c5d%bfe0 U 0 0 1500 bfe0
ff01:5::/32 ::1 U 0 0 16384 lo0
ff02::/16 ::1 UGRS 0 0 16384 lo0
ff02::%bfe0/32 fe80::21c:23ff:fe98:2c5d%bfe0 U 0 0 1500 bfe0
ff02::%lo0/32 ::1 U 0 0 16384 lo0
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