Fix default service directory address
Fix default service directory address

Using 255.255.255.255 does not work on osx.

quixoten/protobuf,brianstien/protobuf,ruby-protobuf/protobuf,quixoten/protobuf,lookout/protobuffy,localshred/protobuf,film42/protobuf,localshred/protobuf,film42/protobuf,brianstien/protobuf,ruby-protobuf/protobuf,zanker/protobuf,zanker/protobuf,lookout/protobuffy