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Dear authors,
The draft currently states the
following:
"4.3. IPv6-Only Core Network
An emerging deployment model uses IPv6 as the dominant protocol at
a
service provider network, and tunnels IPv4 through this network in
a
manner converse to the one described in the previous section.
There
are several motivations for choosing this deployment
model:
o There may not be enough
public or private IPv4 addresses to support network
management functions in an end-to-end
fashion, without
segmenting the network into small parts with
overlapping address
space.
o IPv4 address sharing among
subscribers may involve new address translation
nodes within the service provider's network. IPv6
can be used to reach
these nodes. Normal IPv4 routing is
insufficient for this
purpose, as the same addresses would be used in
several parts of the
network.
o It may be simpler for the
service provider to employ a single- version
network.
The recommended tool for this model is Dual Stack
Lite
[I-D.ietf-softwire-dual-stack-lite]. Dual Stack Lite provides
both
relief for IPv4 address shortage and makes forward progress on
IPv6
deployment, by moving service provider networks and IPv4 traffic
over IPv6. Given this IPv6 connectivity, as a side-effect it becomes easy to provide IPv6 connectivity all the way to the end users." DS-Lite as currently defined in
I-D.ietf-softwire-dual-stack-lite cannot be used in an IPv6-only SP network
unless it is located at the boundaries of that networks (but this may have some
issues such as no optimal routing path for intra-domain communications).
A detailed solution of the deployment of DS-Lite in IPv6-only domain
is defined in http://tools.ietf.org/html/draft-boucadair-dslite-interco-v4v6-04.
Adding a reference to this I-D would be more
appropriate.
Cheers,
Med De : owner-v6ops@ops.ietf.org [mailto:owner-v6ops@ops.ietf.org] De la part de Fred Baker Envoyé : dimanche 15 août 2010 20:00 À : v6ops@ops.ietf.org Cc : kurtis@kurtis.pp.se; rbonica@juniper.net Objet : draft-arkko-ipv6-transition-guidelines WGLC This is to initiate a two week working group last call of draft-arkko-ipv6-transition-guidelines.
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