Hi Jaze On 16 April 2013 09:52, Jaze Lee <jazeltq@xxxxxxxxx> wrote: > hello, > the topology is like this: > > centos v0:eth1 <------> centos v0: eth2 > fc00:2:3:4::1 fc00:2:3::4 > > i turned the packet forwarding > If you are talking about forwarding on Centos V0, forwarding will have no effect here. You appear to be trying to ping eth1 from a box somewhere on eth2's network. This is still classed as an input to V0 and will be handled by the INPUT chain. > > ping6 -i eth2 fc00:2:3:4::1 > the output is > > PING fc00:2:3:4::1(fc00:2:3:4::1) from fc00:2:3::5 eth2: 56 data bytes > >From fc00:2:3::4 icmp_seq=1 Destination unreachable: Administratively > prohibited > >From fc00:2:3::4 icmp_seq=2 Destination unreachable: Administratively > prohibited > >From fc00:2:3::4 icmp_seq=3 Destination unreachable: Administratively > prohibited > >From fc00:2:3::4 icmp_seq=4 Destination unreachable: Administratively > prohibited > Administratively prohibited looks like a firewall issue. Check your IPv6 firewall settings on V0 > > why the box do not forwarding icmp packets to eth2? > and how to set forwarding rules on centos 6.3? > Thanks > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos