Recent changes causing atf test failures

[Paul Goyette <paul%whooppee.com@localhost>]

Your recent pktqueue/if_bridge changes have caused the automated atf 
tests on my amd64 test bed [1] to start timing out.  I'm not sure which 
tests are actually at fault.

Can you please investigate and fix or back-out the changes?

[1] http://whooppee.com/amd64-results/



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