Thanks for the logs! So, I think in both cases, udev *is* using the 'path' rename policy. However, it seems that on *one* system, the kernel has a value for /sys/class/net/<iface>/phys_port_name, which results in the addition to the interface name.
Can you please run: $ cat /sys/class/net/<iface>/phys_port_name on each machine (with the correct interface name), and report back? Also, can you report the kernel versions (uname -r) from each machine? My new suspicion is that you have a different/newer kernel on one machine, and that the network driver gained support for phys_port_name_show(). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2085835 Title: "Predictable Network Interface Naming" suddenly changed the name from enp96s0f0 to enp96s0f0np0 causing outage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2085835/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs