Re: [pcp] WGLC: draft-ietf-pcp-base-12.txt

[Francis Dupont <[e-mail]>]

 In your previous mail you wrote:

   If the NAT is EIM, it will reuse the same mapping it already 
   has.  Because that is the definition of being a EIM NAT.  

=> this is a misconception: it can use it as to convert an
implicit dynamic EIM/EIF mapping into an explicit dynamic mapping
is more than easy but this doesn't mean it is the only way or
there cannot be some constraint forbidding this. In particular
when the explicit dynamic mappings use a different external port
set (*).

Regards

[e-mail]

PS (*): resource management is a good reason to split the
external port space. Or the legal logging: explicit dynamic
mappings have far longer lifetimes so the usual trick to
log only the allocation of implicit mapping port sets is not
adapted...