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Behodar

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#192117 27-Feb-2016 18:38
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Hi all,

 

I was poking around on my ISP's site today (Mynxnet) and noticed that they offer IPv6 now. I went to my router configuration, enabled IPv6 and set it to Automatic. This appeared to work for a minute or two (I got the green IPv6 Geekzone logo and the associated badge, and test-ipv6.com reported 7/10) then it dropped back to v4 and my router reported "IPv6 Relay Error". Rebooting everything resulted in the same error.

 

I know next to nothing about IPv6 so I'm not sure whether this is a configuration issue at my end, an issue with the ISP, or something else. Does anyone know what this error means and what to do about it?

 

The router is an older Apple AirPort Extreme (one of the flat 802.11n models) and my computer is running the latest OS X. The AirPort is connected straight to the ONT and uses PPPoE.

 

Any ideas? It doesn't really concern me if I don't get this working, but I'm curious now :)


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deadlyllama
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  #1510605 10-Mar-2016 14:31
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What sort of router do you have? I was thinking of switching to MyNxnet, but if the v6 doesn't work too well maybe I'll hold off for now.


 
 
 

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Behodar

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  #1510671 10-Mar-2016 16:20
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deadlyllama: What sort of router do you have?

 

It hasn't changed since I wrote it in my original post tongue-out


deadlyllama
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  #1511113 11-Mar-2016 10:14
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Behodar:

 

deadlyllama: What sort of router do you have?

 

It hasn't changed since I wrote it in my original post tongue-out

 

 

Duh.  Might be OK with my Mikrotik, then.  How have you found MyNxnet performance-wise?




ObidiahSlope
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  #1511192 11-Mar-2016 11:29
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https://discussions.apple.com/thread/5188202?start=0&tstart=0

 

 

 

This seems to imply that IPV6 only works for local links. Does this mean that the Apple implementation of IPV6 does not include the world routable address feature?





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Lorenceo
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  #1511229 11-Mar-2016 12:19
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Not 100% sure, but I recall reading that an update a while ago for the Airport platform broke IPv6. People reported it to Apple and the result was a great big nothing.

 

If you want to get it to work you'll probably need to try with a different router. One which is more customisable than the Apple one you're using. Do you know the system Mynxnet is using to give out v6? 2degrees use DHCPv6 PD, and give out a /48 by default over the PPPoE session.

 

Did your ISP send out a router? If they did you may find that it works, or can be configured to work using it.


Behodar

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  #1511358 11-Mar-2016 14:32
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ObidiahSlope: https://discussions.apple.com/thread/5188202?start=0&tstart=0

 

This seems to imply that IPV6 only works for local links. Does this mean that the Apple implementation of IPV6 does not include the world routable address feature?

 

I suspect that that user only has an IPv4 connection. Note that it did briefly work for me, so the underlying support must be there.

 

Lorenceo: Not 100% sure, but I recall reading that an update a while ago for the Airport platform broke IPv6. People reported it to Apple and the result was a great big nothing.

 

There a version of the firmware that broke IPv6 tunnels, but apparently didn't break native support. It was fixed in the next update. I actually remember that issue as I was messing around with TunnelBroker at the time. I don't believe that it's related to native support though.

 

Lorenceo: Do you know the system Mynxnet is using to give out v6? 2degrees use DHCPv6 PD, and give out a /48 by default over the PPPoE session.

 

Don't have a clue.

 

Lorenceo: Did your ISP send out a router?

 

Nope.

 

deadlyllama: How have you found MyNxnet performance-wise?

 

Raw speed seems good enough, but they've had many DNS issues over the years. At first the official word was "we know about the problems and will fix them", then the issues went away for a while. Recently they've been back and the response has changed to a variant of "nobody else has reported this, therefore there isn't a problem". If this keeps up then I'm tempted to switch to Bigpipe when/if coverage expands...

 

 

 

Edit: Something I've been meaning to try, but haven't yet due to the hassle, is to connect my spare Windows machine directly to the ONT and run a PPPoE client. That'll hopefully track down whether the issue is the router or something else. Of course, the ONT is in the garage and the PC is upstairs :(


darylblake
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  #1511716 12-Mar-2016 07:14
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If you email them they will enable it for you. Its off by default, but they don't charge extra for one.




Behodar

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  #1511729 12-Mar-2016 08:21
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darylblake: If you email them they will enable it for you. Its off by default, but they don't charge extra for one. 

 

Of course, no mention whatsoever on the site that it's disabled by default! Thanks.


Behodar

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  #1512712 14-Mar-2016 08:45
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Bingo! IPv6 was indeed disabled, and is now enabled. I won't be able to try it until I get home, but it'd certainly explain why it wasn't working (bizarre that it worked for a few seconds though).


Behodar

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  #1513177 14-Mar-2016 17:15
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Well, I'm home, and it's still not working. Something I hadn't noticed before is that "IPv6 Mode" is set to Tunnel instead of Native, and is greyed out. It's greyed out even if I select manual configuration (previously I'd just been using automatic).

 

Interestingly if I go back a step and change the connection type from PPPoE to DHCP then it lets me choose Native, but the moment I change it back to PPPoE it flips back to Tunnel. Does that sound like it could be a bug? I've had a search online and can't find anyone else having the same issue :(

 

Edit: I've found some old posts saying that IPv6 doesn't work via PPPoE. Of course, Apple's documentation doesn't bother to say that...


Behodar

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  #1561635 29-May-2016 13:06
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Apple released a new firmware update this week (7.6.7) and IPv6 support is improved. ipv6-test.com now gives scores between 16 and 18, depending on the phase of the moon, but I can now access v6 content. The only real oddity is that my IPv6 address, as reported by ipv6-test.com and by System Preferences, does not match the static IP provided by my ISP. But beggars can't be choosers tongue-out


atomeara
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  #1561654 29-May-2016 13:26
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As IPv6 is routed not NAted, each device on your network that supports IPv6 will normally have a uniquie IPv6 address that is routable on the whole internet.

 

Often the first part of your IP address will stay the same (depending on the subnet size it will vary) /48, /56 or /64 are common

 

A /48 xxxx:xxxx:xxxx: part of the address will stay the same

 

A /64 xxxx:xxxx:xxxx:xxxx: will stay the same (hopefully I got my IPv6 subneting is correct)

 

And the second part can be derived from a few different methods, depending on the device and network setup, it often involves the MAC address of your device. 

 

Some devices change there local IPv6 address each time you connect / reboot as a security feature.

 

It also means you should have some level of firewalling to protect the IPv6 end devices either on the router or on the end device. (for example later version of Windows come with the firewall on by default but you would want to make sure an IPv6 printer is locked down in some way).

 

With IPv4 you normally have just 1 address (for home) and everything appears to come from that address.

 

I have been running IPv6 since the world wide IPv6 launch day in 6 June 2012 with Vibe, who now run/own Mynxnet.

 

Generally it has been pretty good and it is always a good way to keep there engineers on there toes too!

 

You might notice the nice IPv6 logo on the top left of geekzone too https://cdn.geekzone.co.nz/images/dev/geekzone-logo-ipv6.gif ;)


Behodar

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  #1561659 29-May-2016 13:40
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atomeara: Often the first part of your IP address will stay the same (depending on the subnet size it will vary) /48, /56 or /64 are common

 

According to Mynxnet it's /56, but the first four "blocks" don't match (Mynxnet says it starts with 2400, but OS X and ipv6-test both list it starting with 2002).


MattR
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  #1562513 30-May-2016 17:55
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Behodar:

 

According to Mynxnet it's /56, but the first four "blocks" don't match (Mynxnet says it starts with 2400, but OS X and ipv6-test both list it starting with 2002).

 

 

 

 

IPv6 addresses that start with 2002 are 6to4 tunnel addresses. You're not using native IPv6.

 

All I can suggest is you try a different router - I've only ever heard bad things about Apple routers and IPv6. You're better off not using v6 if you can't get native.


Behodar

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  #1562562 30-May-2016 19:25
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I ended up turning v6 off again; it seemed to make normal browsing a bit slower. I don't really care enough to replace the router.


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