When a DNS-SD service is advertised using Multicast DNS [RFC6762], if
   there is already another service of the same type advertising with
   the same name then automatic name conflict resolution will occur.  As
   described in the Multicast DNS specification [RFC6762], upon
   detecting a conflict, the service should:

   1.  Automatically select a new name (typically by appending or
       incrementing a digit at the end of the name),
   2.  Try advertising with the new name, and
   3.  Upon success, record the new name in persistent storage.

   This renaming behavior is very important, because it is key to
   providing user-friendly instance names in the out-of-the-box factory-
   default configuration.