Master "depends" setting for all network tests?

My Hobbit server sits on it's own subnet (other stuff is there, but nothing that Hobbit tests for).

Is it possible to have a single setting that basically says "ALL Hobbit network tests are dependant on <gateway>"? So if Hobbit's subnet goes down, and thus all of it's ping tests and other network tests start failing, I can avoid the alerting spam-flood that comes at me after Hobbit's subnet is restored.

The only mention of "depends" I see is on a per_test/per_host basis in the bb-hosts file. This would make me have to put in LOTS of these lines. I would like some kind of global setting if possible.

Thanks