> I have the interface "sixxs" configured for IPv6-connectivity via 
> sixxs-Tunnel. After Reboot this Interfaces does not come up
> automatically although marked as "auto" in /etc/networking/interfaces.
> 
> 
> ,----[ /etc/networking/interfaces ]
> |
> | auto lo eth0 sixxs
> |
> |  [...] 
> |
> | iface sixxs inet6 v4tunnel
> |         address  2001:6f8:XXXX:3e1::2
> |         netmask  64
> |         local    82.165.XX.XX
> |         endpoint 212.224.0.188
> |         ttl      64
> |         up       ip link set mtu 1280 dev sixxs
> |         up       ip -6 route add default  via 2001:6f8:XXXX:3e1::1 dev sixxs
> |         up       ip -6 route del default dev eth0 || true
> `----

It could be that the kernel doesn't want to create a tunnel if its
endpoints are not routable. That can happen if eth0 is using DHCP for
example. If that's the case, make the dependency explicit:

auto lo eth0

iface eth0 ...
        ...
        up ifup sixxs
        down ifdown sixxs

This will cause the tunnel to be brought up after eth0 has been fully
brought up.

It's an old bug... maybe you already fixed it in the mean time? :)

-- 
Met vriendelijke groet / with kind regards,
      Guus Sliepen <g...@debian.org>

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