These machines run systemd-resolved, so resolv-conf would fight it over the file. Both claim the-resolver-configuration so that assigning the wrong one is refused rather than fought over — and the test was picking the wrong one.
These machines run systemd-resolved, so resolv-conf would fight it over the file. Both claim the-resolver-configuration so that assigning the wrong one is refused rather than fought over — and the test was picking the wrong one.