- Permit : in "diagnostics", not in "identities", and add some appropriate note with warnings on what will happen to DEAD:BEEF:CAFE
But given that the "dead/beef" problem has not been eliminated by your proposal, what do you actually gain by forbidding IP-addresses in "identities"? The cat is already out of the bag.
You are bolting the stable door after the horse has bolted (so I shall nip it in the bud :-) ). [Sorry, joke might be hard for Norwegians, but Englishmen with a smattering of Irish politics should get it.]