We should launch a reachability test immediately if a router changes IP or port
When reviewing my patch for bug legacy/trac#911 (moved), Sebastian noted:
in dirserv_should_launch_reachability_test() shouldn't we test for difference in port or ip, and do the test immediately?
This is indeed so. We should do this once legacy/trac#911 (moved) is merged.
Marking for 0.2.2.x-final, since it's trivial.