Subj : Ziggo (my Isp) and IPv6
To   : Bj”rn Felten
From : Michiel van der Vlist
Date : Tue Jun 17 2014 12:39:06

Hello Bj”rn,

On Tuesday June 17 2014 09:07, you wrote to me:

 MvdV>> I have no idea why the downlink speeds on IPv6 are less than a
 MvdV>> third for SixXs and less than

 BF>    SixSS limits the speed to 10Mbps.

They do? Well, it would explain some of my results.

OTOH, I wonder. I can't blame the provider of a free service if they prioritize the service in favour of their paying customers. But SixXs is not a monolitic organisation, there is no central control room where there is a knob that they can turn to limit the overall speed. The POPs are autonomous, I would expect each one to decide for themselves if and when how much they throttle down on the speed.

Anyway, it does not explain my meagre results on my he.net tunnel. He,net does not limit the speed. Fellow IPv6'ers in The Netherlands report less than 10% difference with their high speed (up to 100 Mbps) IPv4 links.

It could be the Linksys WRT54GL running OpenWrt that is the bottleneck. It may already be running near its limits with my 30 Mbps IPv4 link. Having to handle the he.net tunnel end point on top of that may be too much for it. I can think of no easy way to test that.


Cheers, Michiel

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