Hi,
On Friday 22 June 2007 16:15:07 Ed Kapitein wrote:
> Hi Volker,
>
> I am missing the mask you use for the various networks.
> i think you would get it to work with a setup like this:
> A has Ipv6-Address 2001:1::1
> B has Ipv6-Address 2001:2::1
> C has Ipv6-Address 2001:3::1
> and a /64 mask
>
> I think in your setup al ip addresses are in the same subnet, so routing
> will not be done.
I dont think think the problem is caused by using one subnet. I am working on
routing in wireless adhoc networks and there it can happen that routing has
to be done in the same subnet (not each client can hear each other because
of the wireless connections). But nevertheless i have tried your
configuration. Unfortunately my problem still exists. Here some outputs which
can be usefull:
On host A:
ip -6 addr show
2: lo: <LOOPBACK,UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
34: [EMAIL PROTECTED]: <BROADCAST,UP> mtu 1472
inet6 2001:1::1/64 scope global
valid_lft forever preferred_lft forever
ip -6 route show
2001:1::/64 dev wldev metric 256 expires -73726sec mtu 1472 advmss 1412
hoplimit 4294967295
2001:2::/64 dev wldev metric 1 expires -73515sec mtu 1472 advmss 1412
hoplimit 4294967295
2001:3::/64 via 2001:2::1 dev wldev metric 1024 expires -73397sec mtu 1472
advmss 1412 hoplimit 4294967295
fe80::/64 dev wldev metric 256 expires -73726sec mtu 1472 advmss 1412
hoplimit 4294967295
ff00::/8 dev wldev metric 256 expires -73726sec mtu 1472 advmss 1412
hoplimit 4294967295
unreachable default dev lo proto none metric -1 error -101 hoplimit 255
ip -6 nei show
2001:2::1 dev wldev lladdr 137.226.18.145 router REACHABLE
On host B:
ip -6 add show
2: lo: <LOOPBACK,UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
24: [EMAIL PROTECTED]: <BROADCAST,UP> mtu 1472
inet6 2001:2::1/64 scope global
valid_lft forever preferred_lft forever
ip -6 route show
2001:1::/64 dev wldev metric 1 expires -73429sec mtu 1472 advmss 1412
hoplimit 4294967295
2001:2::/64 dev wldev metric 256 expires -73800sec mtu 1472 advmss 1412
hoplimit 4294967295
2001:3::/64 dev wldev metric 1 expires -73424sec mtu 1472 advmss 1412
hoplimit 4294967295
fe80::/64 dev wldev metric 256 expires -73800sec mtu 1472 advmss 1412
hoplimit 4294967295
ff00::/8 dev wldev metric 256 expires -73800sec mtu 1472 advmss 1412
hoplimit 4294967295
unreachable default dev lo proto none metric -1 error -101 hoplimit 255
ip -6 nei show -> shows nothing
On host C:
ip -6 addr show
2: lo: <LOOPBACK,UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
23: [EMAIL PROTECTED]: <BROADCAST,UP> mtu 1472
inet6 2001:3::1/64 scope global
valid_lft forever preferred_lft forever
ip -6 route show
2001:1::/64 via 2001:2::1 dev wldev metric 1024 expires -73651sec mtu 1472
advmss 1412 hoplimit 4294967295
2001:2::/64 dev wldev metric 1 expires -73701sec mtu 1472 advmss 1412
hoplimit 4294967295
2001:3::/64 dev wldev metric 1 expires -73544sec mtu 1472 advmss 1412
hoplimit 4294967295
fe80::/64 dev wldev metric 256 expires -73782sec mtu 1472 advmss 1412
hoplimit 4294967295
ff00::/8 dev wldev metric 256 expires -73782sec mtu 1472 advmss 1412
hoplimit 4294967295
unreachable default dev lo proto none metric -1 error -101 hoplimit 255
ip -6 nei show
2001:2::1 dev wldev lladdr 137.226.18.145 router REACHABLE
Here the results of some ping6:
ping6 from A to B -> works
ping6 from A to C -> Destination unreachable: Address unreachable
ping6 from B to A -> works
ping6 from B to C -> works
ping6 from C to B -> works
ping6 from C to A -> Destination unreachable: Address unreachable
When i run tcpdump on host B (while running ping6 from A to C), i can see,
that the ping gets to host B but host B does not request the linklayeraddress
from host C. That is what i am thinking is causing the problem. But i do not
know why B is not requesting the linklayeraddress.
I can get the ping6 from A to C and from C to A work when i manually add the
linklayeraddress from A and C into the cache from B with "ip -6 neigh add
<IPv6 address> lladdr <link-layer address> dev <device>".
Hope you now have all information you need and you have an idea to help me.
Kind regards
Volker
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