On Tue, Aug 21, 2012 at 8:46 AM, Reinier Boon
<R.Boon@telecats.nl> wrote:
Hi,
I haven't find any resources about rp_filter and IPv6.
No, there does not seem to be such a filter, which is why I do not understand what is going on.
Did you simply check that /proc/sys/net/ipv6/conf/all/forwarding was set to 1?
:-) Yes, but that is not the problem. Router A does route incoming traffic, only blocks traffic originating from itself (or coming though it) that returns on a different interface than it was sent on.
I just cannot find a mechanism that would block this traffic, other than a firewall. But if I switch off my firewall, the traffic is still blocked...