Ok have put together a debdiff based on the original diagnosis. It basically ignores the exit from the modprobe as that should work reasonably well with and without ipv6 builtin to the kernel.
I have built and tested .debs from this and they seem to work. ** Attachment added: "ifupdown-handle-ipv6-builtin" http://launchpadlibrarian.net/23195464/ifupdown-handle-ipv6-builtin ** Attachment removed: "ifupdown-handle-ipv6-builtin" http://launchpadlibrarian.net/23195464/ifupdown-handle-ipv6-builtin -- modprobe -Q is not 'silent enough' / ifup is too picky about return status. https://bugs.launchpad.net/bugs/107432 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs