On Sun 05 Mar 2023 at 21:22:10 (+0200), Anssi Saari wrote: > Curt <cu...@free.fr> writes: > > > * UNPREDICTABILITY > > it turns out even after all this [**an enumeration of complications and > > corner > > cases**] there are still reported cases of interfaces changing their name > > on a > > reboot. > > I have just this fun kind of unpredictability in my router's 4G > module. Mostly, it comes up as wwan0 but sometimes it's wwx<random>. So > I put something in my 4G management script to rename such interface if > there's no wwan0. Easier to force the interface name since I need to > know the interface in the firewall and failover script too.
So what was wrong with using a .link file like: [Match] Type=wwan [Link] NamePolicy=keep kernel or [Match] Type=wwan [Link] Name=my4g Did this not work? Cheers, David.