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.
** Changed in: bind9 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811554 Title: bind9 slow response after netplan apply To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1811554/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs