After installing updates for my templates and dom0, I'm unable to make DNS queries in any VM except the netvm. The netvm has 192.168.1.1 for the nameserver in resolve.conf, which of course is unreachable, but it's able to resolve names. The firewallvm has 10.137.1.1 and 10.137.1.254, the first of which responds to ping, but is unable to resolve names.
Run "systemctl enable NetworkManager-dispatcher.service" in the
TemplateVM upon which your NetVM is based. You may also have to reboot
That appears to have worked, thanks! It did indeed need a reboot.