Only add '.local' to address if not already present.
Only add '.local' to address if not already present.

LinusU/node-mdns-js,mdns-js/node-mdns-js,winkapp/node-mdns-js,guerrerocarlos/node-mdns-js,kmpm/node-mdns-js,mrose17/node-mdns-js,simphax/node-mdns-js