Comment 2 for bug 1890804

This also happened for me on a 20.10 with resolvconf yesterday, I do not have proposed enabled on that system.

I used the chroot process described at https://help.ubuntu.com/community/LiveCdRecovery to be able to get into that system and then uninstalling resolvconf after finding this bug and the mentioned debian bug.

That fixed it. I have that system since 12.10 so before systemd. On another 20.10 I have installed as 19.10 there is no resolvconf installed and that did not see this problem.