Hi, I'm trying to setup a router with ipv6. I found a bug but I do not know if this is a ifupdown bug, a ip bug, or a shorewall6 bug.
I've two ipv6 tunnels (one 6to4 tunnel and one from sixxs). So I tried to setup shorewall6 with two providers ( http://shorewall.net/MultiISP.html ). With this kind of config, shorewall6 try to duplicate the main routing table into another one (in fact, two other ones : one per provider). I do not know the shorewall6 internal, but it try to run: ip -6 route add table 1 2002:XXXX:YYYY::/64 via :: dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 In my opinion, this is due to this entry in the main routing table: # ip -6 route ls [...] 2002:XXXX:YYYY::/64 via :: dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 [...] Note here the strange "via ::" This route is added by ifupdown with the following configuration: iface tun6to4 inet6 v4tunnel address 2002:XXXX:YYYY::1 netmask 64 endpoint 192.88.99.1 local XX.XX.YY.YY gateway ::192.88.99.1 post-up echo 1 > /proc/sys/net/ipv6/conf/all/forwarding When setting up a static inet6 interface with the following config: iface br0 inet6 static address 2002:XXXX:YYYY:1::1 netmask 64 I do not have this "via ::" in the generated route: # ip -6 route ls [...] 2002:XXXX:YYYY:1::/64 dev br0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 [...] If I manually remove the route and try to re-add it, I need to remove the "via ::" (but my ipv6 network is also working correctly without this "via ::"): # ip -6 route del 2002:XXXX:YYYY::/64 via :: dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 # ip -6 route add 2002:XXXX:YYYY::/64 via :: dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 RTNETLINK answers: Invalid argument # ip -6 route add 2002:XXXX:YYYY::/64 dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 # ip -6 route ls [...] 2002:XXXX:YYYY::/64 dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 [...] So, my questions: - is it a bug in ifupdown that adds this "via ::" when configuring v4tunnel ? - is it a bug in the "ip" command that should accept the syntax it displays ? - is it a bug in shorewall6 that should detect this syntax and register the route without the "via ::" (or with another syntax to keep "via ::" if this is correct) ? Regards, Vincent PS: there is the same problem with the route of the link-local address # ip -6 route ls [...] fe80::/64 dev br0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 [...] fe80::/64 via :: dev tun6to4 proto kernel metric 256 mtu 1480 advmss 1420 hoplimit 4294967295 [...] -- Vincent Danjean GPG key ID 0x9D025E87 vdanj...@debian.org GPG key fingerprint: FC95 08A6 854D DB48 4B9A 8A94 0BF7 7867 9D02 5E87 Unofficial pacakges: http://moais.imag.fr/membres/vincent.danjean/deb.html APT repo: deb http://perso.debian.org/~vdanjean/debian unstable main -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org