Remove need for machine to have a valid hostname in IdGenerator - #781
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Summary & Motivation
The code in IdGenerator that finds an IP for the local machine previously required the machine to have a valid hostname. This caused issue if a valid hostname was not specified, a problem I ran into on a new Mac.
This change iterates network interfaces instead of resolving the IP of the computer hostname. It also improves the logic, in that it guarantees that the resolved IP will never be a loopback address (such as 127.0.0.1).
Checklist