Hello, I have a problem with routing and ipv6. Consider the following senario: i have three PCs setup in a chain (A - B - C ). All PCs do only have one NIC.
A has Ipv6-Address 2001::1 B has Ipv6-Address 2001::2 C has Ipv6-Address 2001::3 The following routes exist on PC A: 2001::2 via eth0 2001::3 via gateway 2001::2 On PC B i have the this routes: 2001::1 via eth0 2001::3 via eth0 On PC C: 2001::2 via eth0 2001::1 via gateway 2001::2 PC A can talk to PC B and PC B can talk to PC C. No direct communikation between PC A and PC C is possible (i am simulating wireless connections). I can send a ping6 from A->B, B->A, B->C, C->B. My problem now is, that i cannot send a ping6 from A->C. Forwarding has been enabled by doing "echo 1 > /proc/sys/net/ipv6/conf/all/forwarding". I think i have found out why this is not possible. When PC B gehts the data from PC A it has to look in is neighbour solicitaion table to get the linklayeraddress from PC C. Now we have the case, that there is no entry for PC C and so PC B is sendeing a ICMP6 host unreachable message back to A. This is where the error occurs. In my opinion PC B first have to try to get the linklayeraddress from PC C by sending a neighbour solicitation message but it is no doing that it directly sends back the host unreachable message. When i add PC A and PC B in the neighbour solicitation list on PC B by hand everything works fine. My question now is do i have forget to configure something? Do i have done something wrong? Or can this be a bug in the kernel? Kind regards Volker _______________________________________________ Users mailing list Users@ipv6.org https://lists.ipv6.org/mailman/listinfo/users