I can reproduce the delay problem on Trusty. machine is pingable after around 8s, which means that bonding, vlans and bridges all work.
However, startup is delayed by ~120s for unknown reasons. After that, startup resumes and all services come up. ** Attachment added: "dmesg" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/996369/+attachment/3954680/+files/dmesg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996369 Title: bond slave interface sometimes does not come up on boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/996369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs