All, I am running Bird6/rel.1.3.7 and using OSPF3 for IPv6. I need to setup IPv6 route propagation filtering but do not succeed. I got a bulk of IPv6 routes, but need to propgate to area 0.0.0.0 only the one, which comes in from tap0 (fed0:1701:f001::/64): show route fed0:1701:4::/64 dev lo [direct1 Jan16] * (240) fed0:1701:2::/64 dev GRE1-ETH6 [direct1 Jan16] * (240) dev GRE1-ETH6 [OIPv6 05:47] I (150/10) [172.16.128.111] fed0:1701:3::1/128 dev sit0 [direct1 Jan16] * (240) fed0:1701:a000::/64 via fe80::5efe:ac10:806f on GRE1-ETH6 [OIPv6 05:47] * E2 (150/10/10000) [172.16.128.111] fed0:1701:f004::/64 via fe80::5efe:ac10:8078 on GRE2-ETH6 [OIPv6 05:47] * E2 (150/10/10000) [172.16.128.120] fed0:1701:f002::/64 via fe80::5efe:ac10:806f on GRE1-ETH6 [OIPv6 05:47] * E2 (150/10/10000) [172.16.128.111] fed0:1701:f003::/64 via fe80::5efe:ac10:806f on GRE1-ETH6 [OIPv6 05:47] * E2 (150/10/10000) [172.16.128.111] fed0:1701:f001::/64 dev tap0 [direct1 Jan16] * (240) fed0:1701:f003:1102::/64 via fe80::5efe:ac10:806f on GRE1-ETH6 [OIPv6 05:47] * E2 (150/10/10000) [172.16.128.111] bird> Is this available at all? I am not managing to do this, I am missing something or doing something generally wrong? Pls. find relevant config details below: filter test_filter { if net ~[ fed0:1701:f001::/64 ] then accept; else reject; } protocol ospf OIPv6 { export filter test_filter; tick 2; # rfc1583compat yes; import all; area 0.0.0.0 { thank you very much for replying freundlich grüsst, kind regards, ****************************************************** Notice: The information contained in this message is intended only for use of the individual(s) named above and may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you are not the intended recipient of this message you are hereby notified that you must not use, disseminate , copy it in any form or take any action in reliance of it. If you have received this message in error please delete it and any copies of it and notify the sender immediately. *******************************************************