Github user markap14 commented on the issue:
https://github.com/apache/nifi/pull/2909
@nicholasmhughes This isn't really something that we can do right now, as
it would be a breaking change. Also, it takes away some important functionality
for some users. In a clustered environment, the IP address will not be the
same. However, for many setups, the interface name will be consistent across
the machines, so providing an interface name makes more sense in that case.
If you would like to be able to specify an IP address, the PR would need to
introduce the new property but leave the old one intact and working.
Additionally, the `customValidate` method would need to be added/updated to
ensure that only one of the properties is set.
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