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Re: [v6ops] [EXTERNAL] Re: FYI: Microsoft's latest on CLAT

Tommy Jensen <Jensen.Thomas@microsoft.com> Sun, 10 March 2024 17:43 UTC

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From: Tommy Jensen <Jensen.Thomas@microsoft.com>
To: Tore Anderson <tore@fud.no>, Ole Trøan <otroan=40employees.org@dmarc.ietf.org>, Jen Linkova <furry13@gmail.com>
CC: "v6ops@ietf.org" <v6ops@ietf.org>
Thread-Topic: [EXTERNAL] Re: [v6ops] FYI: Microsoft's latest on CLAT
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Date: Sun, 10 Mar 2024 17:43:07 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/v6ops/TF49opBhEHxr6yvz8_INRZKMjYA>
Subject: Re: [v6ops] [EXTERNAL] Re: FYI: Microsoft's latest on CLAT
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>>> IPv6 mostly in itself is not incompatible with a single IPv6 address. That’s an implementation choice....interesting to see where Microsoft lands on this one.
>>I believe Tommy already mentioned...

Jen is correct in linking to our draft, as we are endeavoring for our proposed text and future product to be in alignment. Deploying IPv6 but allowing only a single /128 per client does not seem like a scenario we should be designing for going forward.

>...e.g., by ensuring that an outbound TCP/UDP connection assigned 192.0.2.1:portX claims [2001:db8::1]:portX automatically... [2001:db8::1]:portY may be used by a regular native IPv6 socket simultaneously.

Note that port collision will occur if an IPv4 socket and an IPv6 socket wish to use the same port, where they should not have to worry about that (it would be a regression from dual stack networking introduced by the implementation choice).

Thanks,
Tommy

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