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Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop

"Fred Baker (fred)" <fred@cisco.com> Tue, 23 October 2012 15:50 UTC

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From: "Fred Baker (fred)" <fred@cisco.com>
To: Fernando Gont <fgont@si6networks.com>
Thread-Topic: [v6ops] new draft: draft-taylor-v6ops-fragdrop
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Date: Tue, 23 Oct 2012 15:50:09 +0000
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Cc: "v6ops@ietf.org" <v6ops@ietf.org>, "draft-taylor-v6ops-fragdrop@tools.ietf.org" <draft-taylor-v6ops-fragdrop@tools.ietf.org>
Subject: Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop
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On Oct 23, 2012, at 1:31 AM, Fernando Gont wrote:

> On 10/16/2012 03:49 PM, Templin, Fred L wrote:
>> Plus, if we can't rely on ICMP PTB and we can't rely on IPv6
>> fragmentation/reassembly, then all we are left with is 1280
>> and IPv6 is the new ATM...
> 
> ... and that's assuming no translators, and that the IPv6 Internet
> really complies with the minimum IPv6 MTU (something that some argue
> that it's not the case).

One could argue that IPv6 setting a minimum MTU and placing requirements on the underlying link layers is ill-considered. The underlying link layers are what they are. Some of the more amazing bits of 6lowpan are driven by that mismatch between IPv6 and 802.15.4.

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