I feel like using an ip address for a file name that lives in the config directory is not a good idea. Pack makers will often include the config directory in packs. Not sure if using some other identifier is possible (world uuid or some non ip related info from server.dat maybe) but it would be appreciated.

Thanks for your feedback! I can't find any other identifier that can replace the ip address. World UUID is not a vanilla feature. Probably the only solution is to move these files out of the config directory.