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Re: [DNSOP] [v6ops] New Version Notification for draft-v6ops-xie-network-happyeyeballs-00.txt

Ole Troan <otroan@employees.org> Tue, 25 September 2018 10:25 UTC

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From: Ole Troan <otroan@employees.org>
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Date: Tue, 25 Sep 2018 12:25:16 +0200
Cc: Gert Doering <gert@space.net>, dnsop <dnsop@ietf.org>, V6 Ops List <v6ops@ietf.org>, 神明達哉 <jinmei@wide.ad.jp>
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Subject: Re: [DNSOP] [v6ops] New Version Notification for draft-v6ops-xie-network-happyeyeballs-00.txt
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> This hints at a general misunderstanding on how "The Internet" works.
> 
> Talking to the local ISP on "what would you recommend, IPv4 or IPv6?"
> can give an indication, but if the server you're trying to talk to 
> is on the other side of the world, the local ISP's preference for 
> IPv4-vs-IPv6 might be the opposite of what actually works better to
> reach said server.  There are many networks on the path...
> 
> Talking to far-end server need measurement on end-to-end path..So the accurracy of end-to-end measurement is the key. There are acturally lots of practice in the fields of NPM and APM. People can do it well. 

But in the general case the network cannot.
Think host multi-homing.

Ole

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