Re: [v6ops] PMTUD issue discussion

Joe Touch <touch@isi.edu> Fri, 05 September 2014 19:08 UTC

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Date: Fri, 05 Sep 2014 12:07:02 -0700
From: Joe Touch <touch@isi.edu>
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To: Owen DeLong <owen@delong.com>
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Cc: Fernando Gont <fgont@si6networks.com>, "v6ops@ietf.org" <v6ops@ietf.org>, Tom Perrine <tperrine@scea.com>, Fernando Gont <fernando@gont.com.ar>
Subject: Re: [v6ops] PMTUD issue discussion
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Let me be more clear:

On 9/5/2014 11:50 AM, Owen DeLong wrote:
> I recommend reading the RFC before saying that 6lowpan isn’t IPv6.

Anything that doesn't support an IPv6 MTU of at least 1280 isn't IPv6.

That requirement has no impact on the L2 MTU, but the L2 must never 
return an ICMP error of "too big" for IPv6 MTUs that are valid.

Joe