Subject: Re: gre(4) and multicast
To: None <tech-net@netbsd.org>
From: Miles Nordin <carton@Ivy.NET>
List: tech-net
Date: 05/14/2005 22:55:20
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>>>>> "is" == Ignatios Souvatzis <is@netbsd.org> writes:
gd> it answers only if the ospfd is running,
is> I wouldn't expect it to work otherwise.
yes, ospfv3 is running on both tlp4 and gre0, and tcpdump shows HELLO
packets going out both. on tlp4 each ospf router answers ff02::5
pings, while on gre0 none answer.
>>>>> "gd" == Gert Doering <gert@greenie.muc.de> writes:
Maybe this is related:
May 15 02:35:43 ezln ospf6d[748]: Network: Join AllSPFRouters on ifindex 16 failed: Operation not permitted
'show ipv6 ospf6 int' confirms ifindex 16 is the gre0 interface.
gd> could you try changing the gre(4) tunnel to a gif(4) tunnel,
gd> and see whether all-routers multicast works there?
You're right, the behavior is the same. I get the same syslog error
message, the same ping6 behavior, the same ifmcstat output.
is> Hm, have you checked the interfaces' multicast address list?
tlp4:
inet6 fe80::200:d1ff:fe1a:3919%tlp4
inet6 3ffe:401d:203a:3::1
group ff02::6%tlp4 refcnt 1
group ff02::5%tlp4 refcnt 1
group ff02::2%tlp4 refcnt 1
group ff02::1:ff00:1%tlp4 refcnt 1
group ff02::2:3659:21e6%tlp4 refcnt 2
group ff02::1%tlp4 refcnt 2
group ff02::1:ff1a:3919%tlp4 refcnt 1
enaddr 00:00:d1:1a:39:19 multicnt 12
09:00:07:00:00:46 -- 09:00:07:00:00:46 1
33:33:00:00:00:06 -- 33:33:00:00:00:06 1
09:00:07:ff:ff:ff -- 09:00:07:ff:ff:ff 1
01:00:5e:00:00:06 -- 01:00:5e:00:00:06 1
33:33:00:00:00:05 -- 33:33:00:00:00:05 1
01:00:5e:00:00:05 -- 01:00:5e:00:00:05 1
33:33:00:00:00:02 -- 33:33:00:00:00:02 1
33:33:ff:00:00:01 -- 33:33:ff:00:00:01 1
01:00:5e:00:00:01 -- 01:00:5e:00:00:01 1
33:33:36:59:21:e6 -- 33:33:36:59:21:e6 1
33:33:00:00:00:01 -- 33:33:00:00:00:01 1
33:33:ff:1a:39:19 -- 33:33:ff:1a:39:19 1
[...]
gre0:
inet6 fe80::200:f8ff:fe77:8168%gre0
group ff02::2:3659:21e6%gre0 refcnt 1
group ff02::1%gre0 refcnt 1
group ff02::1:ff77:8168%gre0 refcnt 1
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