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Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?

Joe Touch <touch@isi.edu> Mon, 09 November 2015 21:02 UTC

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To: Philip Homburg <pch-v6ops-3@u-1.phicoh.com>, v6ops@ietf.org
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From: Joe Touch <touch@isi.edu>
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Date: Mon, 09 Nov 2015 13:02:02 -0800
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Subject: Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?
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On 11/8/2015 11:47 AM, Philip Homburg wrote:
> Call me old fashioned, but what NAT breaks is not what is traditionally
> called a protocol layering violation. (The TCP checksum is one of the classical
> layering violations in the IP protocol stack)

Given that a NAT breaks the TCP checksum (which depends on the IP
pseudoheader and TCP header) and thus has to recalculate it, wouldn't
that be proof that a NAT breaks what you consider protocol layer violation?

Joe

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