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Re: [quicwg/base-drafts] Update draft-ietf-quic-transport.md (#105)

Martin Thomson <notifications@github.com> Tue, 03 January 2017 05:00 UTC

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Date: Mon, 02 Jan 2017 21:00:29 -0800
From: Martin Thomson <notifications@github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/105/review/14885283@github.com>
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References: <quicwg/base-drafts/pull/105@github.com>
Subject: Re: [quicwg/base-drafts] Update draft-ietf-quic-transport.md (#105)
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martinthomson commented on this pull request.



> +including the public header, encrypted payload, and any authentication fields.
+All QUIC packets SHOULD be sized to fit within the path's MTU to avoid IP
+fragmentation. To optimize bandwidth efficiency, endpoints SHOULD use Path MTU
+Discovery ({{!RFC1191}}, {{!RFC1981}}) for detecting the path's MTU, setting the
+maximum packet size appropriately, and storing the result of previous PMTU
+determinations.
+
+(TODO: Should there be a high minimum MTU for QUIC to avoid ICMP attacks? If so,
+does the endpoint fail over to TCP or simply allow fragmentation?)
+
+QUIC endpoints MUST maintain a separate PMTU estimate for each IP address the
+peer is using in the connection. Endpoints SHOULD maintain an estimate for each
+combination of local and remote IP addresses (as each pairing may have a
+different minimum MTU in the path).
+
+## Packet MTU Determination

Path MTU Discovery?

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