On Mon, 14 Jun 2021 15:53:53 +0100 Jonathan Davies wrote: > >> Compare implementations of rename_netif in > >> https://git.kernel.org/pub/scm/linux/hotplug/udev.git/tree/src/udev-event.c > >> (traditional udev, which handles collisions) and > >> https://github.com/systemd/systemd/blob/main/src/udev/udev-event.c > >> (systemd-udevd, which does not handle collisions). That explains some user reports I've been seeing :o > > Then submit a change to add the logic back. This looks like a userspace > > tool breaking existing setups, so please take it up with the developers > > of that tool. The kernel has not changed or "broken" anything here. > > (I didn't mean to imply that the kernel was to blame, merely that a > kernel change could help make things tidier.) If you're attempting to fix this in systemd please share the PR info so we can voice support!