1 May
2016
1 May
'16
9:38 p.m.
It is not allowed in any other place -- in other places, RFC 6126 says that AE MUST NOT be 0. (There's an omission in Section 4.4.9, where it only says in what case AE MAY be 0; the implication is that it MUST NOT be 0 in other cases.)
Hmm, maybe this should be spelled out somewhere?
Could you please clarify what exactly needs to be spelled out? I have the impression that the meaning of AE 0 is spelled out pretty clearly in all three pleaces where it is allowed. The one missing bit is Updates, where it doesn't state clearly that AE 0 is only allowed for retractions, but I think it's pretty clear from context. -- Juliusz