This could well be related to this bug: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1793763
I experience the same problem, not only during boot but also when waking up from sleep. All ethernet connectivity is dead for 30 minutes because the switch in my network seems to have detected an IP conflict. This does not occur if I put the plug in after boot. Very annoying, my work arround is to use ifplugd for eth0 instead of NetworkManager -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1826403 Title: Ethernet won't connect when cable is plugged in at boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1826403/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
