Re: [quicwg/base-drafts] Ipv6 flow label (#2399)

Jana Iyengar <> Mon, 04 February 2019 09:08 UTC

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Subject: Re: [quicwg/base-drafts] Ipv6 flow label (#2399)
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janaiyengar commented on this pull request.

> @@ -2203,6 +2203,21 @@ address before path validation is complete.
 A client that migrates to a new address SHOULD use a preferred address from the
 same address family for the server.
+## Use of IPv6 Flow-Label and Migration {#ipv6-flow-label}
+Endpoints that send data using IPv6 SHOULD apply an IPv6 flow label
+in compliance with {{!RFC6437}}, unless the local API does not allow
+setting this parameter.
+The IPv6 flow label SHOULD be a pseudo-random function of the source
+and destination addresses, source and destination UDP ports, and the destination
+CID. The flow label generation MUST be designed to minimize the chances of
+linkability with a previously used flow label, as this would enable correlating
+activity on multiple paths (see {{migration-linkability}}).
+A possible implementation is to compute the flow label as a one way

A possible implementation is to compute the flow label as a one-way

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