On Sat, Mar 09, 2002 at 08:40:17PM +0200, Pekka Savola wrote:
> On Sat, 9 Mar 2002 kuznet@xxxxxxxxxxxxx wrote:
> > Pekka, please, reread the report; they talk about _neigbour_
> > _solicitations_.
> > They have nothing to do either with ifp->probes, RS, DA or with addrconf.c
> > at all. It is deal of ndisc.c/neghbour.c.
>
> Well, DAD *does* use neighbour solicitations. But the problem report was
> indeed rather unclear; at least tcpdumps would have been nice.
We hadn't log files until now, because this problem happens about once per 2-3
days.
Here is example of tcpdump log...
fe80::201:2ff:fedc:d28c is FreeBSD box
fe80::3e18:401b is Linux box (2.4.18)
after some time without any problem it started to answer with redirect
instead of neighbor advertisement.
#tcpdump -i gif0 -n icmp6
04:42:40.187050 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:40.223644 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:40.224794 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:40.226296 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:43.153497 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:43.155932 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:48.163389 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:48.165887 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:48.187078 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:48.223145 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:48.224310 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:48.225498 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:49.187140 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:49.254335 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:49.255499 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:49.256756 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:50.187153 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:50.223507 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:50.224670 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:50.225903 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:53.173822 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:53.176228 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:58.183879 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:58.186347 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:58.187231 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:58.223651 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:58.224813 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:58.225999 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
04:42:59.187289 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:59.223323 fe80::3e18:401b > fe80::201:2ff:fedc:d28c: icmp6: redirect
fe80::3e18:401b to fe80::3e18:401b
04:42:59.224475 fe80::201:2ff:fedc:d28c > fe80::3e18:401b: icmp6: neighbor sol:
who has fe80::3e18:401b
04:42:59.225722 fe80::201:2ff:fedc:d28c > fe80::201:2ff:fedc:d28c: icmp6:
fe80::3e18:401b unreachable address
Best Regards,
--
Jan Oravec
project coordinator
XS26 - 'Access to IPv6'
http://www.xs26.net
jan.oravec@xxxxxxxx
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