Use 127.0.0.1 for bonjour when the default IP address is not available

Ignore-this: 48675c37941f9f7fc6ae5252148dc41b

darcs-hash:20140211151629-b22ec-19c144640dd790297789838f9a2b49c476d87121
Add more transport information to SIPEngineTransportDidDisconnect

Ignore-this: 70ccd4c7932f8cfb93db4fa9b531d53f

darcs-hash:20140212150647-56b4d-600fe7aedf20f8599ac62b662f1304d25def6c56
Revert restarting TCP/TLS transports on failure

Ignore-this: a630e6f4a1b9200a7b73bed482ce060f

darcs-hash:20140217154803-56b4d-750bd97cfc3ef1d7fa98c345ef4f60e26d1b21a7