Failover IPv6 with multiple PA prefixes (Was: IPv6 fc00::/7 - Unique local addresses)

Mark Smith nanog at
Wed Nov 3 03:52:34 CDT 2010

On Wed, 3 Nov 2010 04:14:51 +0000 (UTC)
Sven Olaf Kamphuis <sven at> wrote:

> > I've had a recent experience of this. Some IPv6 CPE I was
> > testing had a fault where it dropped out and recovered every 2 minutes
> > - a transient network fault. I was watching a youtube video over IPv6.
> > Because of the amount of video buffering that took place, and because
> > the same IPv6 prefixes were assigned to the connection once it
> > recovered, the youtube video kept playing. That was a great end-user
> > experience and it was somewhat addictive to watch the PPP light
> > go off and come back on while the video kept playing faultlessly.
> thats primarily due to "partial http downloads" aka http status 206 rather 
> than 202 where you can just specify at which offset in the file you want 
> the httpd to start reading the file to you, most flash movie players, 
> however, don't support this. connection lost = movie has to be fully 
> reloaded.

There's a whole lot of speculation and no evidence in that
statement ... as it said, it was faultless, so I very strongly doubt
there was any restarting the stream.

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