On Sun, 16 Aug 2020 23:10:34 +0200, Guilhem Moulin wrote: >Please also try the attached patch (with and without delay). If this >alone doesn't help BUT the addition of some delay *before* running >configure_networking() fixes the race condition, then this bug should >probably reassigned to initramfs-tools.
As you suspected, that patch alone does not fix it, but adding a delay at the point you marked does. (At least, it worked 8 times in a row.)