Everything came back as OOB / default except the last one. I don't have a nm-dns-dnsmasq.conf file in /var/run, neither does my wife's machine. So this is probably something I've missed when building.
BTW, the file did not get created on my machine just now when I installed / reinstalled / dpkg-reconfigured dnsmasq. Is this a sign of a deeper issue / corruption? Or is this file generated by a plugin like network-manager-openvpn or network-manager-openvpn-gnome? If so can you give me the exact package name so I can DL it?
And, digging in my machine I've blown up DNS as it stands with what I did above. But, only DNS and not the whole network stack. I can connect to a resolved external host.