Subject: Re: [quicwg/base-drafts] TP to disable migration (#1447)
From: erickinnear <[email-masked]>
To: quicwg/base-drafts <[email-masked]>
Cc: Subscribed <[email-masked]>
Date: Thu, 14 Jun 2018 18:50:06 -0700
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>

erickinnear commented on this pull request.

> @@ -1289,6 +1290,13 @@ preferred_address (0x0004):
 : The server's Preferred Address is used to effect a change in server address at
   the end of the handshake, as described in {{preferred-address}}.
 
+disable_migration (0x0009):
+
+: The server does not support migration of connections to a different IP
+  address. Clients MUST NOT send any packets, including probing packets, from an
+  IP address other than that used to perform the handshake.  This parameter

This seems mildly ambiguous -- isn't there a scenario where the client doesn't necessarily have control over that IP? I'm not saying that that's the common case, but it could happen that the client doesn't just have a different port after a NAT rebinding, but that it actually shows up as coming from a different address entirely depending on how things are routed between NATs, especially after inactivity. 

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