@Martin: Fixing the installed system is easy, the bad case happens when the installer sets up the system with "rename2" as the first interface, making access via console necessary in order to recover.
root@compute-node37:~# SYSTEMD_LOG_LEVEL=debug udevadm test-builtin net_id /sys/class/net/eno1 calling: test-builtin === trie on-disk === tool version: 229 file size: 6841778 bytes header size 80 bytes strings 1755242 bytes nodes 5086456 bytes Load module index timestamp of '/etc/systemd/network' changed timestamp of '/lib/systemd/network' changed Parsed configuration file /lib/systemd/network/99-default.link Parsed configuration file /lib/systemd/network/90-mac-for-usb.link Created link configuration context. ID_NET_NAME_MAC=enx002590d8975a ID_OUI_FROM_DATABASE=Super Micro Computer, Inc. ID_NET_NAME_ONBOARD=eno1 ID_NET_NAME_PATH=enp7s0f0 Unload module index Unloaded link configuration context. root@compute-node37:~# SYSTEMD_LOG_LEVEL=debug udevadm test-builtin net_id /sys/class/net/rename3 calling: test-builtin === trie on-disk === tool version: 229 file size: 6841778 bytes header size 80 bytes strings 1755242 bytes nodes 5086456 bytes Load module index timestamp of '/etc/systemd/network' changed timestamp of '/lib/systemd/network' changed Parsed configuration file /lib/systemd/network/99-default.link Parsed configuration file /lib/systemd/network/90-mac-for-usb.link Created link configuration context. ID_NET_NAME_MAC=enx002590d8975b ID_OUI_FROM_DATABASE=Super Micro Computer, Inc. ID_NET_NAME_ONBOARD=eno1 ID_NET_NAME_PATH=enp7s0f1 Unload module index Unloaded link configuration context. Also note that the whole renaming process seems to come from an Ubuntu specific patch in Revert-udev-network-device-renaming-immediately- give.patch, IIUC plain systemd would fail the renaming process and end up with either (eno1, eth1) or (eth0, eno1) as interface tuples. If there was a way to get rid of the race condition and make sure that the system always ends up with the same tuple, that would already be a large step forward. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1578141 Title: Predictable interface names partially broken with igb driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1578141/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs