On Mon, Aug 30, 2021 at 04:41:55PM -0400, Dan Ritter wrote: > Steve Keller wrote: > > I plan to upgrade a server from Debian stretch to buster. Having read > > the release notes I wonder what's the best way to avoid the new scheme > > of unpredictable network interface names. > > In /etc/default/grub, assuming that you are booting with grub, > > GRUB_CMDLINE_LINUX_DEFAULT="quiet net.ifnames=0" > > The "quiet" is not necessary and is a different feature.
This gives unpredictable results if the system has more than one ethernet interface, or more than one wireless interface. It's fine on systems that have 0-1 ethernet and 0-1 wireless NICs.