Re: [quicwg/base-drafts] DPLPMTU merge tweaks (#3702)

Martin Thomson <> Thu, 28 May 2020 23:55 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 2F2F63A0FCA for <>; Thu, 28 May 2020 16:55:33 -0700 (PDT)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.483
X-Spam-Status: No, score=-1.483 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_24=1.618, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: (amavisd-new); dkim=pass (1024-bit key)
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id nRKGvY4fZRE9 for <>; Thu, 28 May 2020 16:55:32 -0700 (PDT)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id D2AE73A0FC9 for <>; Thu, 28 May 2020 16:55:31 -0700 (PDT)
Received: from ( []) by (Postfix) with ESMTP id D64DA2C0CF5 for <>; Thu, 28 May 2020 16:55:30 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1590710130; bh=1y+p06zS4HTFcquQI6ECl/Hy3YSdXTWrMUetIrBfvKE=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=2L9pY1DD+vmbURbAsfOD3AkccfuF1DcdUGEHEja7Xf0ZA/F2EH73FInoA96kDI7YX zcAs4r07mOB4Nz3ObwHyIZGOrzPHzuVul6KoXGT9d+D6CIjxRsqCwhIrbWVLvDArk4 I+1BX3bpY+Fwj0kYr4Ht5l8MH0G2IPwoyJTk7+gU=
Date: Thu, 28 May 2020 16:55:30 -0700
From: Martin Thomson <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/pull/3702/review/>
In-Reply-To: <quicwg/base-drafts/pull/>
References: <quicwg/base-drafts/pull/>
Subject: Re: [quicwg/base-drafts] DPLPMTU merge tweaks (#3702)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5ed04f72c42be_78fb3fbecf8cd96c1122af"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: martinthomson
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
Archived-At: <>
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Thu, 28 May 2020 23:55:33 -0000

@martinthomson commented on this pull request.

> +
+From the perspective of DPLPMTUD, QUIC transport is an acknowledged
+packetization layer (PL). A sender can therefore enter the DPLPMTUD BASE state
+when the QUIC connection handshake has been completed.
+### Sending QUIC DPLPMTUD Probe Packets
+DPLPMTU probe packets are ack-eliciting packets.  Probe packets that use the
+PADDING frame implement "Probing using padding data", as defined in
+Section 4.1 of {{!DPLPMTUD}}.  Endpoints could limit the content of probe
+packets to PING and PADDING frames as packets that are larger than the current
+maximum packet size are more likely to be dropped by the network.
+DPLPMTU probe packets consume congestion window, which could delay subsequent
+transmission by an application.

Maybe one of you can make a suggestion for what this can say (or file an issue for follow-up).

You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub: