Re: [v4tov6transition] [Softwires] ISP support of Native IPv6 across NAT44 CPEs -Proposed 6a44 Specification

Ole Troan <> Thu, 07 October 2010 13:44 UTC

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Cc: Softwires <>, "Templin, Fred L" <>,
Subject: Re: [v4tov6transition] [Softwires] ISP support of Native IPv6 across NAT44 CPEs -Proposed 6a44 Specification
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>> This is an interesting idea, but I will argue this is as complex as L2TP
>> softwire. When Brian, Remi and I discussed, we would like to have a simple
>> and cost effective technology that could be deployed by SP w/o upgrading the
>> CPE.
> Indeed.
> We need some reliable and easily deployable solutions for IPv6 use to become widespread, including in hosts behind legacy CPEs.


my personal experience with host tunneling hasn't been great (ISATAP, Teredo, 6to4, configured, L2TP). and do ISPs really have an interest in supporting individual hosts? and be exposed to all of their peculiarities?

it appears to me that we are filling in every possible square in the solution matrix. just because it is possible doesn't mean that it is useful or deployable...