>> Could it be waiting for duplicate address detection (DAD)? You could try >> with: >> >> iface eth0 inet6 static >> address aaaa:bbbb:10:60:11::4/80 >> gateway aaaa:bbbb:10:60:11::2 >> dad-attempts 0 >> … > > That's it. Thank you. Quite easy to understand. > > Yet I am even more interested in why that was no problem with previous > Debian versions.
I suggest `reportbug`: It seems like the `post-up` script is run
a bit too early.
Stefan
