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407 posts

Ultimate Geek
+1 received by user: 3

Topic # 89974 12-Sep-2011 21:08
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Hi fellow Geekzoners,

Been a while since I've been on here - so much to catch up on!

Anyway here is my problem: For the past couple of months I have found YouTube painfully slow - videos take ages to buffer and no way would I even think about trying to watch in HD. That is until a friend told me it could be due to my IPv6 tunnel. Sure enough, disabling IPv6 lookups in Firefox resolved the issue. Problem is - I LIKE MY IPV6!

I use SixXS as my tunnel provider with ACS Data in Wellington as the POP. Latency to the POP is brilliant and Facebook over IPv6 is no problem whatsoever. Have not noticed any significant slowdowns anywhere else but YouTube.

Basically what I am wondering, is what is causing these issues? I know it may have something to do with DNS and IPv6 routes, but is there anything I can do?

Reason I am posting in this forum is I have heard through the grapevine that some ISPs are letting people in on IPv6 beta tests. I am wondering if anyone here from Telecom knows anything that they may be doing and that I might be able to join in on?

Having a fully IPv6 native internal network is awesome, and definitely increases my geek factor! Not to mention the massive new i7 Server that is about to go in to production! Tongue out

Anyway if anyone has any ideas about what I can do, that would be brilliant!


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467 posts

Ultimate Geek
+1 received by user: 83

  Reply # 520530 13-Sep-2011 16:12
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I had this problem on my Xtra connection as well. I ended up disabling ipv6 in firefox for and that fixed the problem. I'm moving our company to Snap VDSL which has native ipv6 so hopefully won't have this problem soon.

6352 posts

Uber Geek
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  Reply # 521003 14-Sep-2011 15:24
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This is just a guess, but I believe that the problem is due to your IPv6 address being a foreign one. Presumably services such as SixXS give you an American IP address, and therefore YouTube etc. will be using American servers instead of the local caches.

That would explain why disabling v6 for YouTube fixes the problem.


999 posts

Ultimate Geek
+1 received by user: 168


  Reply # 521051 14-Sep-2011 16:52
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It'll be because you are using a tunnel and youtube is coming from the USA rather than Sydney, Fire up wireshark and see where the youtube content is going and do a trace.

Also drop the tunnel and get a ISP with native support, Tunnels are always a best efforts kind of thing since it's free it's not going to get a large slice of bandwidth offered to it

Most problems are the result of previous solutions...

All comment's I make are my own personal opinion and do not in any way, shape or form reflect the views of current or former employers unless specifically stated 

467 posts

Ultimate Geek
+1 received by user: 83

  Reply # 521074 14-Sep-2011 17:14
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Tunnel provider for Sixxs is in Wellington (ACSData), but the route to Sydney Youtube servers (which I see being used when downloading videos) is not very fast.

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