Re: Space for Packet Metadata

"Eggert, Lars" <lars@netapp.com> Wed, 28 February 2018 14:58 UTC

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From: "Eggert, Lars" <lars@netapp.com>
To: =?utf-8?B?TWlra2VsIEZhaG7DuGUgSsO4cmdlbnNlbg==?= <mikkelfj@gmail.com>
CC: IETF QUIC WG <quic@ietf.org>
Subject: Re: Space for Packet Metadata
Thread-Topic: Space for Packet Metadata
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Date: Wed, 28 Feb 2018 14:58:11 +0000
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Hi,

On 2018-2-28, at 9:11, Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com> wrote:
> 
> Would it make sense to reserve space for additional metadata by reducing the required initial packet size to, say 1000 octets in order to allow for a smaller PMTU than the actual PMTU?
> 
> This could simplify tunnelling and monitoring, and also other cases where multiple servers cooperate on handling a single connection.

any such servers can already "reserve" such space by not forwarding packets that exceed whatever limit they want to enforce - this is how PMTUD works.

Lars