Tests attempt to connect to addresses which aren't listening

The object replication tests attempt to connect to the addresses 127.0.0.0, 127.0.0.2, 127.0.0.3, and 127.0.0.4 (obj/test_replicator.py L116). Which aren't listening for anything. On Linux all of 127.0.0.* are mapped, while they are not on OSX, this results in these tests taking http_timeout (60 seconds) * 4 seconds for each test that attempts to talk to the network in thsi fasion (there are 3 of them) thus these tests take 720 seconds. If you map these addresses manually using sudo ifconfig lo0 alias 127.0.0.2 then these tests complete almost instantly. These tests should be altered not to attempt to talk to the network, and particularly not to talk to addresses that aren't listening.