FYI - hardcoding these addresses is now causing me problems as I try to get our test suite passing on IPv6 only hosts.  "localhost" is correct.  

IMNSHO if for some reason a system cannot resolve "localhost" into a correct address, it should be banned from running any form of networking related test. :/

I should not have to write messy conditional code to try and determine which type of socket I will likely need to bind to to determine which format of IP address string I need to supply as the localhost bind address.  That is backwards!