Re: [quicwg/base-drafts] QUIC connection migration and IPv6 only NAT64/DNS64 Networks (#2122)

Mike Bishop <> Thu, 13 December 2018 20:02 UTC

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From: Mike Bishop <>
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Subject: Re: [quicwg/base-drafts] QUIC connection migration and IPv6 only NAT64/DNS64 Networks (#2122)
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As @janaiyengar noted, the current semantics of `preferred_address` are not quite what you're looking for, though -- this is a set of other addresses the server could be reached over at need, not a server's request to attempt an immediate switch to one of them.

I could see changing the structure and semantics such that the server sends a list of "equivalent" addresses and perhaps indicates one of them as preferred.  I'm hesitant to try pulling this into v1 at this point, but I'll also acknowledge that `preferred_address` in particular hasn't seen a lot of deployment experience.  A change driven by issues with doing that in the real world might be a reasonable argument.

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