Re: [PATCH v3 net-next 0/5] ulp: Generalize ULP infrastructure

From: Edward Cree <redacted>
Date: Tue, 8 Aug 2017 21:23:03 +0100

In any case, if you go with the enum approach and later it _does_ prove
 necessary to have more flexibility, you can have enum values dynamically
 assigned (like genetlink manages to do); and programs using the existing
 fixed IDs will continue to work.

Indeed:

It's much harder to go the other way...

^^^^ THIS!