Put mdns const stuff in a package - now no longer globals.
Some refactoring to make method names bit more logical, and to get rid of excess copying.
Some skeletal code which is maybe not far from working ospf-state propagation.. too tired to finish today though, so committing with one failing testcase (new one).
From 1 to 4 broken testcases. Sigh.
Some other bits still reachable; however, bunch of code (or tests?) still broken too.