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Re: [quicwg/base-drafts] Mandate using a new connection ID on migration (#2413)

Igor Lubashev <notifications@github.com> Tue, 05 February 2019 00:38 UTC

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Subject: Re: [quicwg/base-drafts] Mandate using a new connection ID on migration (#2413)
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> allowing a peer to exhaust connection IDs to maintain linkability across migrations is an attack that I'd rather we not have.

I'd not worry about the peer. But I would, indeed, worry about a man-on-a-side exhausting your reserve of connection IDs by pretending to initiate peer migration events.  So this is a valid concern.

Of course, a violation of this MUST is indistinguishable from NAT rebinding/tethering migration and thus is not detectable by the peer.  So this MUST is really just a recommendation.  It is a fine recommendation.

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