Feedback to draft-ietf-enum-3761bis-02.txt

Dear Authors of RFC3761bis

I briefly went through the I-D and can provide you with the following 
feedback:


* Add "Obsoletes RFC 3761" to the header of the I-D


* ABNF

You have extended the ABNF for type and subtype by a dash "-" character.

       type          = 1*32(ALPHA / DIGIT / "-")
       subtype       = 1*32(ALPHA / DIGIT / "-")

I guess the intension was to allow the "X-", which was somewhat 
inconsistent in RFC 3761.

Do you intend to allow "-" everywhere in the Type and Subtype strings?

I'd rather restrict it to "-" only as the 2nd character and only if the 
prefix containing a "-" as 2nd charater is defined/described in an RFC.

This could be reached by:

- Write some text to permit "-" only as 2nd character, and/or
- Restrict this in the ABNF such as

   [sub]type = ALPHA (ALPHA / DIGIT / "-" )  1*30 ( ALPHA / DIGIT )

   Note: This proposal would also disallow a digit as the 1st character.


What do you think about?

cheers,
  Bernie