The way dnsmasq works with 12.10 has changed again, from 12.04. I have searched the Ubuntu documentation and Google for further info , without success.
Basically in 12.04 , dnsmasq moved the contents of /etc/resolv.conf to /var/run/nm-dns-dnsmasq.conf. You could see what the upstream DNS servers were. This file in 12.10 is empty, and with all the reading I have done, it appears to be being managed by dbus. I just need to know where this information is being stored, as it is causing us an issue with VirtualBox, not correctly passing through the DHCP information.
I know I could switch this service off , with the switch for the network manager service, but I would rather understand how the new system functions, and correct the issue there.
Any pointers to how this works gratefully received.