Re: [v4tov6transition] [Softwires] IPv6 VPNs configured over 1280MTU tunnels

"Templin, Fred L" <Fred.L.Templin@boeing.com> Mon, 11 October 2010 18:22 UTC

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From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: =?iso-8859-1?Q?R=E9mi_Despr=E9s?= <remi.despres@free.fr>
Date: Mon, 11 Oct 2010 11:23:02 -0700
Thread-Topic: [Softwires] [v4tov6transition] IPv6 VPNs configured over 1280MTU tunnels
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Cc: Softwires <softwires@ietf.org>, "v4tov6transition@ietf.org" <v4tov6transition@ietf.org>
Subject: Re: [v4tov6transition] [Softwires] IPv6 VPNs configured over 1280MTU tunnels
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> > In the to-host direction, because the ISP network is all what 
> > is left to traverse before reaching the CPE.
> 
> In what you call the to-host direction, any ICMPv4
> returned from the ISP network might not have enough
> information for stateless translation to ICMPv6.

I should also say, any ICMPv4 returned from within
the end user network (where MTUs might not be so well
managed) might not be delivered to the tunnel endpoint
in the ISP network.

Fred
fred.l.templin@boeing.com