Re: [Softwires] IPmix I-D version 01.

["Bless, Roland (TM)" <[e-mail]>]

Hi Omar,

> Your feedback will be appreciated for the submitted version of the IPmix
> I-D.

I couldn't see any substantial changes, so there are
still the same issues with this proposal:
- The draft states: "It solves the issue of allowing IPv6 only hosts to
  communicate to IPv4 only hosts and vice versa in a simple and very
  efficient way."
  => This is simply wrong: "IPv4 only" and "IPv6 only" hosts would not
  be able to speak IPmix by definition of "only". This is a fundamental
  contradiction in your proposal.
  If an IPv4 host would be upgraded with IPmix, there is no reason to
  not let it upgrade to IPv6 and be it a dual stack host. Problem
  solved.
- Introducing something like IPmix would be more difficult than simply
  deploying IPv6.
- IPv4 only hosts would never be able to reach the whole IPv6 address
  space
- For IPv6 only hosts we have NAT64/DNS64 to let them talk to the IPv4
  world

All these issues have been mentioned before. If you don't consider
them, don't expect any more comments.

BTW: There are still remnants of IPv.. in the document (sections 4.2 and
7). Please remove them in any future versions as it will confuse people
outside the IETF.

Regards
 Roland