Hi Remi,
Agree with the spirit of your proposals. I may rearrange text to provide an
explicit applicability statement for basic 6rd vs. gateway initiated 6rd.


Best Regards,
Tina TSOU
http://tinatsou.weebly.com/contact.html


-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Rémi Després
Sent: Friday, December 10, 2010 9:27 AM
To: Tom Taylor
Cc: Softwires
Subject: Re: [Softwires] Fwd: New Version Notification for
draft-tsou-softwire-gwinit-6rd-02


Le 8 déc. 2010 à 13:38, Tom Taylor a écrit :

May I suggest some amendments to the abstract that, IMHO, better explain
what GI 6rd does, and avoids its interpretation as a criticism of the 6rd of
RFC 5969? 

If agreed for the abstract, amendments to the draft can be made accordingly
(and I could contribute if needed).

1.
Replace "This document proposes a modification to the 6rd deployment model
for IPv6."
by "This document proposes a deployment model of 6rd that is additional to
the basic model of RFC 5969."
Reason: the deployment model of RFC 5969 still holds, and needs not to be
modified.

2.
Before "6rd requires support by a device (the 6rd CE) on the customer site"
add "In RFC 5969,"  

3.
Replace "The advantages of this approach are that it requires no
modification to customer equipment and avoids assignment of IPv4 addresses
to customer equipment."
by "Where access networks can directly support native IPv6, the advantage of
this approach is that customer equipment only needs to support
natively-routed IPv6, as opposed to support also 6rd. Besides, it can apply
even across access networks in which IPv4 isn't deployed."
Reasons: 
- This advantage only applies where access networks, in particular their
hardware, supports native IPv6.
- A CPE that is IPv4-only also needs to be modified. 
- Providing IPv6 only to customers where IPv4 could be also provided is not
always an advantage. This can be a disadvantage where customers are
permitted to use their own CPEs.

Regards,
RD


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