[6bone] Re: IPv6 routing problem with zebra and kernel

[Marc Blanchet]

just guessing:
- might be just a problem of connexion time.
- I would try traceroute -w  with some higher number than the default and 
see if it is still the same issue.

might be not the problem.

Marc.

-- vendredi, mai 24, 2002 01:54:44 +0200 Nicolas DEFFAYET 
<nicolas.deffayet-extml@ndsoftwaregroup.com> wrote/a écrit:

> Hello,
>
> First, sorry for cross-post but the problem is related to a lot of
> mailing-lists.
>
> I have a strange problem on one of my router:
> lacr1.us.ndsoftwarenet.net.
>
> I get "connect: Network is unreachable", when i try a traceroute or a
> connection from the router to a host on 6bone.
> The problem is random, because a destination www.kame.net can work but
> not www.6bone.net (for exemple) and after restart zebra www.6bone.net
> can work but not www.kame.net. Often, all destinations don't work.
>
> OS: Debian 3.0 (sid/unstable) with last update
> Kernel: 2.4.18 (i have try kernel 2.4.18 USAGI (last snapshot) and
> standard (from kernel.org) but same problem
> Zebra: 0.93 CVS (i have try 0.92a too but same problem)
>
> It's not the zebra configuration (zebra.conf, bgpd.conf), because all my
> routers have the same configuration.
>
> How i can fix this problem ?
>
> Any help are welcome.
>
> ---
>
> When a user, connected on router try traceroute:
>
> wireless:/etc/zebra# /usr/sbin/traceroute6 phenix.rootshell.be
> traceroute to phenix.rootshell.be (3ffe:8100:200:1fff::25) from
> 3ffe:81f1:3:2006::2, 30 hops max, 16 byte packets
> 1  tun6-0-lacr1.us.ndsoftwarenet.net (3ffe:81f1:3:2006::1)  118.109 ms
> !H 125.594 ms !H 119.42 ms !H
> wireless:/etc/zebra#
>
> ---
>
> When i try a traceroute from router:
>
># traceroute6 www.6bone.net
> connect: Network is unreachable
>
> ---
>
> Kernel routing table, good route on the good interface:
>
># route -A inet6 | grep 3ffe:b00::/24
> 3ffe:b00::/24                               fe80::d55b:403
> UG    1024   0        0 sit1
>
> ---
>
> BGP is OK:
>
> lacr1.us.ndsoftwarenet.net> show ipv6 bgp 3ffe:b00::/24
> BGP routing table entry for 3ffe:b00::/24
> Paths: (2 available, best #1, table Default-IP-Routing-Table)
>   Advertised to non peer-group peers:
>   3ffe:81f1:3:1000::2
>   10566
>     3ffe:81f1:1:2054::1 from 3ffe:81f1:1:2054::1 (213.91.4.3)
>     (fe80::d55b:403)
>       Origin incomplete, localpref 100, valid, internal, best
>       Last update: Thu May 23 06:04:22 2002
>
>   2042 10566
>     3ffe:81f1:3:2004::2 from 3ffe:81f1:3:2004::2 (202.187.22.65)
>     (fe80::cabb:1602)
>       Origin incomplete, localpref 100, valid, external
>       Last update: Thu May 23 06:04:20 2002
>
> lacr1.us.ndsoftwarenet.net>
>
> ---
>
> Zebra routing table is OK:
>
> lacr1.us.ndsoftwarenet.net> show ipv6 route 3ffe:b00::/24
> Routing entry for 3ffe:b00::/24
>   Known via "bgp", distance 200, metric 0, best
>   Last update 00:06:35 ago
>   * fe80::d55b:403, via sit1
>
> lacr1.us.ndsoftwarenet.net>
>
> ---
>
> Zebra compiled with --enable-netlink
>
> zebra.log:
> 2002/05/23 06:06:26 ZEBRA: netlink-listen error: File exists,
> type=RTM_NEWROUTE(24), seq=742, pid=0
> 2002/05/23 06:06:26 ZEBRA: netlink-listen error: File exists,
> type=RTM_NEWROUTE(24), seq=743, pid=0
> 2002/05/23 06:14:20 ZEBRA: netlink_talk: ignoring message type 0x0019
> 2002/05/23 06:14:20 ZEBRA: netlink_talk: ignoring message type 0x0019
>
> ---
>
> Zebra compiled with --disable-netlink
>
> zebra.log:
> 2002/05/23 06:15:13 ZEBRA: can't delete ipv6 route: No such process
> 2002/05/23 06:15:13 ZEBRA: can't delete ipv6 route: No such process
> 2002/05/23 06:15:13 ZEBRA: can't add ipv6 route: File exists
> 2002/05/23 06:15:13 ZEBRA: can't add ipv6 route: File exists
>
> ---
>
> Best Regards,
>
> Nicolas DEFFAYET
>
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------------------------------------------
Marc Blanchet
Viagénie
tel: +1-418-656-9254x225

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