Re: [quicwg/base-drafts] Client port for new connections (#2061)

Kazuho Oku <notifications@github.com> Mon, 03 December 2018 01:34 UTC

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Subject: Re: [quicwg/base-drafts] Client port for new connections (#2061)
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I think the fear we have with QUIC is that some NATs are going to run out of UDP ports, or that they would be reusing ports at a rate so fast that we would be seeing involuntary migrations with connections that are idle for just a small fraction of time.

Reusing the client-side tuple for multiple connections do mitigate the issue.

The trade-off here is the privacy concern that @martinthomson pointed out. I agree that it is a concern, however I might also argue that hiding who's behind does not have a practical benefit for small NATs (e.g. home routers). And huge NATs (e.g. carrier-grade) might have an observer within the NAT.

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