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Topic # 107405 10-Aug-2012 20:06 Send private message

Hi all,

I have a dual stack IPv4 / IPv6 connection through xnet. I've just noticed that when browsing geekzone with firefox, geekzone is defaulting to an ipv4 connection instead of the expected ipv6 connection. Does anyone else see this behaviour or know why this would be happening? The issue seems to be confined to geekzone, other sites do connect via ipv6 by default, and, if I use internet explorer, geekzone is connected to via an ipv6 connection.

If I visit http://test-ipv6.com/ in firefox, I get the expected

"Congratulations! You appear to have both IPv4 and IPv6 Internet working. If a publisher publishes to IPv6, your browser will connect using IPv6. Your browser prefers IPv6 over IPv4 when given the choice (this is the expected outcome)."

Not really sure why firefox doesn't like geekzone via IPv6

C:\Users\dolsen>nslookup www.geekzone.co.nz Server:  unknown Address:  192.168.0.1

Non-authoritative answer: Name:    geekzone.co.nz Addresses:  2001:470:35:4d4::2           202.175.128.164 Aliases:  www.geekzone.co.nz

C:\Users\dolsen>ping www.geekzone.co.nz

Pinging geekzone.co.nz [2001:470:35:4d4::2] with 32 bytes of data: Reply from 2001:470:35:4d4::2: time=564ms Reply from 2001:470:35:4d4::2: time=562ms

Ping statistics for 2001:470:35:4d4::2:     Packets: Sent = 2, Received = 2, Lost = 0 (0% loss), Approximate round trip times in milli-seconds:     Minimum = 562ms, Maximum = 564ms, Average = 563ms Control-C ^C C:\Users\dolsen>

Any thoughts?

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1679 posts

Uber Geek
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  Reply # 670780 10-Aug-2012 20:14 Send private message

i used to get that ipv6 green writing under the geekzone banner but that disappeared months ago , and like you i have no idea why as all the tests i do , ipv6 works.

BDFL
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  Reply # 670797 10-Aug-2012 21:21 Send private message

You should get the IPv6 logo if you get through it. We sure get IPv6 connections and have some addresses recorded.





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  Reply # 670798 10-Aug-2012 21:22 Send private message

To the OP, your post came from an IPv6 address. Were you using a different browser?







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  Reply # 670804 10-Aug-2012 21:53 Send private message

freitasm: To the OP, your post came from an IPv6 address. Were you using a different browser?



I did the original post using IE. Here's my reply using Firefox on the same machine. No IPv6 logo is shown.


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  Reply # 670805 10-Aug-2012 22:05 Send private message

Nope, this wasn't. Perhaps Firefox doesn't like that some elements are not IPv6?

What IP you get for cdn.geekz1.com? Perhaps because other elements are not IPv6? Or just the browser has bugs?




Just A Geek
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  Reply # 670807 10-Aug-2012 22:06 Send private message

http://en.wikipedia.org/wiki/Happy_Eyeballs :-)

If a website is dual stacked the browser will use the connection which comes back 1st (ie IPv4 as geekzone's IPv6 goes via a much slower tunnel)

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  Reply # 670824 10-Aug-2012 22:47 Send private message

LennonNZ: http://en.wikipedia.org/wiki/Happy_Eyeballs :-)

If a website is dual stacked the browser will use the connection which comes back 1st (ie IPv4 as geekzone's IPv6 goes via a much slower tunnel)


+1, this is Happy Eyeballs at work. Firefox/Chrome/Safari (in fact, Mac OS X) all implement this to some in various approaches. IE does not.

Happy Eyeballs is doing the right thing here - the IPv6 path is slower, so it is not using it.

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  Reply # 670834 10-Aug-2012 22:57 Send private message

Doh... Forgot about this.

Note that we moved our CDN resources from MaxCDN to CloudFlare because of their new Sydney POP. This reduced latency to cdn.geekz1.com from 250ms to 40ms (for me at least). These now have native IPv6 (including cdn.geekz1.com, images.geekzone.co.nz, avatar.geekzone.co.nz and others). You should really touch cdn.geezk1.com for resources most of the times, only going for the geekzone.co.nz domains when using SSL-enabled pages.

We also moved jobs.geekzone.co.nz and live.geekzone.co.nz to CloudFlare, so these have native IPv6 now. The main subdomain www.geekzone.co.nz remains with the tunnel until we get Datacom to provide native IPv6.

We have no plans to move www.geekzone.co.nz or m.geekzone.co.nz to CloudFlare because these sites use SSL in some pages and we don't have plans to buy certificates for CloudFlare - yet.






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  Reply # 670839 10-Aug-2012 23:10 Send private message

Mystery solved, it's not me, it's you :-)

Good to know about that feature.

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  Reply # 671108 11-Aug-2012 17:43 Send private message

freitasm: We have no plans to move www.geekzone.co.nz or m.geekzone.co.nz to CloudFlare because these sites use SSL in some pages and we don't have plans to buy certificates for CloudFlare - yet.


Actually, an update here... We did end up buying SSL certificates for our domains on CloudFlare. We have tested some fallback and it seems we can automatically switch any domain to them and back in case of need.

Not that this affects IPv6 but since I touched the subject...






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  Reply # 672395 14-Aug-2012 17:40 Send private message

You should get IPv6 by default now as both IPv4 and IPv6 will have similar speeds...







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  Reply # 672474 14-Aug-2012 20:15 Send private message

freitasm: You should get IPv6 by default now as both IPv4 and IPv6 will have similar speeds...



Yep- IPv6 here on Firefox.


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