Topic: Limit Ring server to localhost only. RingFinger.new('localhost') no

Am using RingyDingy.
Have altered call to Rinda::RingFinger.new   to Rinda::RingFinger.new('localhost') in ring_server.rb and in ringy_dingy.rb, but still get, intermittently, attachments to like named services on my compatriots (in the same lan segment) which causes things to disappear trying to run on their machine (or on mine from theirs).   Need to stop this behavior for development so we can work independantly.
Any suggestions?