Comment 59 for bug 1624320

This bug, as described, is about 127.0.0.53 being configured in /etc/resolv.conf /alongside/ other entries. In recent releases this is no longer the behavior; instead, /etc/resolv.conf is entirely managed by systemd and points exclusively to the 127.0.0.53 local resolver, which in turn will use the upstream resolvers that have been configured via dhcp or via static netplan or network-manager config.

Concerns about the behavior of the local resolver should be filed as separate issues.