Re: [quicwg/base-drafts] disable_active_migration with SPA (#3765)

Jana Iyengar <> Tue, 14 July 2020 22:03 UTC

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Date: Tue, 14 Jul 2020 15:03:01 -0700
From: Jana Iyengar <>
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Subject: Re: [quicwg/base-drafts] disable_active_migration with SPA (#3765)
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@MikeBishop's PR exposes this issue that I don't see how we can get around trivially: Yeah, this is getting tricky. A server that wants to use SPA with a different address family and _does not support_ migration has to deal with the case of the client's address changing when speaking to the SPA on a different address family. This is not different than migration, FWIW, and you'd have to do (i) the PATH_CHALLENGE/RESPONSE dance, (ii) ensure that the interface is the same as it was (how does a server ensure this anyway?)

I'm not sure that we _need_ to take on this larger problem, which can be made into an extension, this late in the process.

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