CNAP - very quick comment

[Ian Cooper <ian@the-coopers.org>]

Apologies for the abruptness of this, but having just taken a quick scan of 
the draft the absolute first thing you're going to want to address is:

1) You only consider IPv4; no way will this fly far if that's the case.

Also:

2) If the "cnas" in your ABNF is analagous to "content network AS" you're 
going to want to increase the size of the field.  (Since you appear to have 
ASCII you might want to consider going hex.)  [I guess it might be suitable 
to reserve private space that can be re-used, but I'd be happier to see a 
default that provided for more than 10,000 content networks.]