What does /etc/resolv.conf look like? Is it using bind9 as the nameserver, or systemd-resolve (127.0.0.53)? You might not even be using bind9 directly, but via systemd-resolve, so that changes how this should be debugged.
What does /etc/resolv.conf look like? Is it using bind9 as the nameserver, or systemd-resolve (127.0.0.53)? You might not even be using bind9 directly, but via systemd-resolve, so that changes how this should be debugged.