Hello, I can confirm this issue: name resolution was not working after upgrading to Ubuntu 19.10. It was possible to fix it until the next reboot (or next networking service restart) by restarting systemd- resolved service. Located the same issue and temporary resolved it by commenting out `if' condition, forcing systemd-resolved service to always reload/restart as it was in previous Ubuntu versions.
These are the changes to /etc/dhcp/dhclient-enter-hooks/resolved file: --- resolved.original 2019-10-29 15:43:51.940561949 +0200 +++ resolved 2019-10-29 15:44:24.804941675 +0200 @@ -56,9 +56,9 @@ newstate="$(mktemp)" md5sum $statedir/isc-dhcp-v4-$interface.conf $statedir/isc-dhcp-v6-$interface.conf &> $newstate - if ! cmp $oldstate $newstate; then + #if ! cmp $oldstate $newstate; then systemctl try-reload-or-restart systemd-resolved.service - fi + #fi rm $oldstate } Best regards, Peteris -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850009 Title: Issue with detecting new state in dhclient-enter-hooks.d/resolved To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1850009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs