Date: Wed, 22 May 2019 06:47:54 -0700
From: Jana Iyengar <notifications@github.com>
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Subject: Re: [quicwg/base-drafts] Largest acked in ACK frame MUST NOT decrease
 (#2205)
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I think this is mostly addressed and what's left is OBE. There's text in the draft now that says: "Processing counts out of order can result in verification failure. An endpoint SHOULD NOT perform this verification if the ACK frame is received in a packet with packet number lower than a previously received ACK frame. Verifying based on ACK frames that arrive out of order can result in disabling ECN unnecessarily."

This would be adequate, but there's other text (thanks to #2312) that says old ACKs can be resent. I think we simply add a note about that in the para above, which should be adequate.

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<p>I think this is mostly addressed and what's left is OBE. There's text in the draft now that says: "Processing counts out of order can result in verification failure. An endpoint SHOULD NOT perform this verification if the ACK frame is received in a packet with packet number lower than a previously received ACK frame. Verifying based on ACK frames that arrive out of order can result in disabling ECN unnecessarily."</p>
<p>This would be adequate, but there's other text (thanks to <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="396633365" data-permission-text="Issue title is private" data-url="https://github.com/quicwg/base-drafts/issues/2312" data-hovercard-type="pull_request" data-hovercard-url="/quicwg/base-drafts/pull/2312/hovercard" href="https://github.com/quicwg/base-drafts/pull/2312">#2312</a>) that says old ACKs can be resent. I think we simply add a note about that in the para above, which should be adequate.</p>

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