HOSTS File not read when disconnected from network

I have a few entries in my HOSTS file for a VirtualMachine running locally. The names/entries resolve normally when I’m connected to a network and Comodo 3 is running in Custom mode.

If I disconnect from all networks (hardwired and wireless) the names are no longer being resolved!
If I turn off Comodo 3 (Allow All) then the names are resolved again!

What do I need to do to cause HOSTS file lookup when Comodo is running and disconnected from the network?
Why should comodo behave differently whether I’m connected to a network or not.