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Geek


Topic # 240575 14-Sep-2018 15:31
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Hey all,

 

 

 

I've just recently signed up to 2Degrees but I'm experiencing a problem with the IPv6 performance when visiting some sites...? the IPv6 settings I have in my Fritzbox is the same as Nick's one (https://i.imgur.com/1eweX9V.jpg) Though, I'm just not sure why the performance is so slow when IPv6 is enabled with those settings..The Fritzbox dns server tab, I am using 2Degrees one. But my devices are using Cloudfares both IPv6 DNS server address.

 

IPv6: 2606:4700:4700::1111 and 2606:4700:4700::1001

 

Also, have tried putting both the IPv4 and IPv6 dns address server together in the list and still experiencing the problem with performance when loading pages/videos etc...

 

I notice that the issue goes away when I disable IPv6

 

P.S. Have updated to the latest firmware


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nas

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  Reply # 2090751 14-Sep-2018 16:03
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Try set the MTU to 1500?




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Geek


  Reply # 2090805 14-Sep-2018 17:05
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nas:

 

Try set the MTU to 1500?

 

 

Unfortunately, the issue still continues..anymore methods :( ?


nas

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  Reply # 2090814 14-Sep-2018 17:31
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I’m not familiar with the fritzbox unfortunately

I just switched over to 2degrees today and my ipv6 performance is fine, but I’m using an edgerouter 4

@2degreescare ?



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Geek


  Reply # 2090831 14-Sep-2018 17:54
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nas: I’m not familiar with the fritzbox unfortunately

I just switched over to 2degrees today and my ipv6 performance is fine, but I’m using an edgerouter 4

@2degreescare ?

 

Ah I see. Fair enough. 

 

 

 

I can safely say that I am not the only one who is experiencing this problem. 

 

 

 

Apparently, People have reportedly posting about this issue many times but this issue has never been fixed..?

 

 

 

Here: 

 

https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=215386

 

https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=231816

 

https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=230792

 

https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=207945

 

 

 

@NickMack provided guide for IPv6 encounters errors with slow performance. But since he provided it, I assume he isn't able to reproduce it? 

 

 

 

But thanks for coming by. Hope this issue gets fix cause we don't want to miss out on the IPv6 feature :D. 


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  Reply # 2090917 14-Sep-2018 22:04
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Hi YummyTech,

 

As requested on multiple occasions, please call customer care on 0800 022 022.

 

Nick.




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Geek


  Reply # 2090920 14-Sep-2018 22:17
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NickMack:

 

Hi YummyTech,

 

As requested on multiple occasions, please call customer care on 0800 022 022.

 

Nick.

 

 

Hey Nick.

 

 

 

Thanks for coming by.

 

 

 

Yesterday night, 2D called me regarding the fibre speeds. This morning have got back to them and have stated the speeds were all good now and fixed :D. So that case was fixed. 

 

This case however is new and we have not spoken about this issue. Will contact 2D sometime next week to discuss for solutions to resolve this..

 

Thanks and have a nice weekend.

 

P.S. Please do not reveal my real name in these posts..please refer to me by my username for privacy. If possible, please kindly edit your post and erase my name. Many thanks. 


Meow
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  Reply # 2090926 14-Sep-2018 22:28
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Edited posts to remove name.

I'm also not having any issues with IPv6 so this is just your setup. If you've just transferred to 2degrees it may take a moment for their automation to fully provision you.

 

Also - Speeds over IPv6 are nearing Gigabit speeds for me.

 

Edit: Also using Cloudflare's DNS resolvers over IPv6 through DNS over HTTPS.





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  Reply # 2090927 14-Sep-2018 22:35
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Hiya,


We identified an issue a few months back (April) with ipv6 performance, it was to do with queuing from memory and it was resolved - https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=231816&page_no=2#1995373. We have no other known issues with ipv6, other than the current Chorus ONT issue which is affecting customers on all providers nationwide. As discussed, your current testing is inconclusive and appears to be isolated to you (Based on lack of feedback from others and limited data from you). I suspect there is something within your setup at home that maybe causing issues.


If you need some assistance on your connectivity via the Fritzbox, please call customer care on 0800 022 022.


Nick.


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  Reply # 2092809 18-Sep-2018 19:57
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I had the same issue ... follow this post exactly!  https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=240157

 

Things improved a lot for me ... but I'm still not 100% sure the MTU size of 1492 is correct for when IPv6 packets go past the first 2Degrees routers.

 

If I do ping tests with the "Do Not Fragment" flag set and the packet size set to 1436 (IPv6 ICMP adds 48bytes ?) and try to ping Googles IPv6 DNS server it fails.

 

 

 

Marks-iMac:tmp marksmith$ sudo ping6 -D -s 1444 2001:4860:4860::8844

 

PING6(1492=40+8+1444 bytes) 2406:e001:15e2:1:a0b4:2a91:a959:cfc0 --> 2001:4860:4860::8844

 

^C

 

--- 2001:4860:4860::8844 ping6 statistics ---

 

6 packets transmitted, 0 packets received, 100.0% packet loss

 

 

 

If I drop the packet size down to 1232 (total packet of 1280) it'll work :

 

Marks-iMac:tmp marksmith$ sudo ping6 -D -s 1232 2001:4860:4860::8844

 

PING6(1280=40+8+1232 bytes) 2406:e001:15e2:1:a0b4:2a91:a959:cfc0 --> 2001:4860:4860::8844

 

1240 bytes from 2001:4860:4860::8844, icmp_seq=0 hlim=60 time=32.588 ms

 

1240 bytes from 2001:4860:4860::8844, icmp_seq=1 hlim=60 time=31.707 ms

 

1240 bytes from 2001:4860:4860::8844, icmp_seq=2 hlim=60 time=31.889 ms

 

1240 bytes from 2001:4860:4860::8844, icmp_seq=3 hlim=60 time=31.758 ms

 

^C

 

--- 2001:4860:4860::8844 ping6 statistics ---

 

4 packets transmitted, 4 packets received, 0.0% packet loss

 

round-trip min/avg/max/std-dev = 31.707/31.985/32.588/0.354 ms

 

 

 

 

 

I'm not so hot at network voodoo .. but if I run some a traceroute6 test to Googles IPv6 DNS server : 2001:4860:4860::8844 you get this :

 

 

 

Marks-iMac:tmp marksmith$ sudo traceroute6 2001:4860:4860::8844

 

traceroute6 to 2001:4860:4860::8844 (2001:4860:4860::8844) from 2406:e001:15e2:1:a0b4:2a91:a959:cfc0, 64 hops max, 12 byte packets

 

1  fritz.box  0.827 ms  0.456 ms  0.256 ms

 

2  2406:e000:2801:f::1  5.802 ms  5.831 ms  5.610 ms

 

3  * * *

 

4  2406:e000:400::2  31.556 ms  31.286 ms  32.110 ms

 

5  2406:e000:400::3  31.742 ms  32.754 ms  32.766 ms

 

6  *

 

    2001:4860:0:110a::1  32.479 ms

 

    2001:4860:0:1109::1  32.090 ms

 

7  2001:4860:0:1::14ca  32.189 ms

 

    2001:4860:0:1::6bd  32.624 ms

 

    2001:4860:0:1::1456  32.158 ms

 

8  google-public-dns-b.google.com  32.061 ms  32.265 ms  31.831 ms

 

 

 

 

 

"Fritz.box" is my router, then hops 2, 3, 4 and 5 are routery things in Snap/2Degrees, after that we look to be in the land of Google until finally we hit the Google DNS server.

 

Something in the route has an MTU of about 1280 ... and I think it is some of the 2Degrees kit ...

 

 

 

Marks-iMac:tmp marksmith$ sudo ping6 -D -s 1232 2406:e000:400::3

 

PING6(1280=40+8+1232 bytes) 2406:e001:15e2:1:a0b4:2a91:a959:cfc0 --> 2406:e000:400::3

 

1240 bytes from 2406:e000:400::3, icmp_seq=0 hlim=61 time=32.821 ms

 

1240 bytes from 2406:e000:400::3, icmp_seq=1 hlim=61 time=32.349 ms

 

1240 bytes from 2406:e000:400::3, icmp_seq=2 hlim=61 time=32.096 ms

 

^C

 

--- 2406:e000:400::3 ping6 statistics ---

 

3 packets transmitted, 3 packets received, 0.0% packet loss

 

round-trip min/avg/max/std-dev = 32.096/32.422/32.821/0.300 ms

 

 

 

That works with 1280 ...

 

 

 

Marks-iMac:tmp marksmith$ sudo ping6 -D -s 1233 2406:e000:400::3

 

PING6(1281=40+8+1233 bytes) 2406:e001:15e2:1:a0b4:2a91:a959:cfc0 --> 2406:e000:400::3

 

^C

 

--- 2406:e000:400::3 ping6 statistics ---

 

5 packets transmitted, 0 packets received, 100.0% packet loss

 

 

 

That fails with 1281 ..

 

 

 

Maybe a network guru can work it out better than me, or tell me where I'm mistaken :-)  I know I set to 1492 and it improved things heaps my Mac and my Xbox (especially the Xbox) but I still think there are other devices down stream from me fragmenting the packets, so I wonder if 1280 is what should be set on the Mac, Xbox and router ?


'That VDSL Cat'
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  Reply # 2092817 18-Sep-2018 20:03
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YummyTech:

 

P.S. Please do not reveal my real name in these posts..please refer to me by my username for privacy. If possible, please kindly edit your post and erase my name. Many thanks. 

 

 

i'd recommend changing your profile settings as your name is public currently.





#include <std_disclaimer>

 

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.


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  Reply # 2092871 18-Sep-2018 21:09
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Check that your firewall is not blocking ICMP packet too large notification packets. Otherwise the remote server has to keep resending packets with progressively smaller packets, until it can figure out the max MTU supported between itself and you.





Meow
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  Reply # 2092874 18-Sep-2018 21:18
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hio77:

 

i'd recommend changing your profile settings as your name is public currently.

 

Isn't his real name...

 

Mark:

 

I had the same issue ... follow this post exactly!  https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=240157

 

Things improved a lot for me ... but I'm still not 100% sure the MTU size of 1492 is correct for when IPv6 packets go past the first 2Degrees routers.<snip>

 

I use a MTU size of 1500:

 

Your first ping that fails works with me no problems at a higher 1452 bytes:

 

# ping6 -c 4 -s 1452 2001:4860:4860::8844
PING 2001:4860:4860::8844 (2001:4860:4860::8844): 1452 data bytes
1460 bytes from google-public-dns-b.google.com: icmp_seq=0 ttl=60 time=35.646 ms
1460 bytes from google-public-dns-b.google.com: icmp_seq=1 ttl=60 time=35.688 ms
1460 bytes from google-public-dns-b.google.com: icmp_seq=2 ttl=60 time=35.450 ms
1460 bytes from google-public-dns-b.google.com: icmp_seq=3 ttl=60 time=35.383 ms
--- 2001:4860:4860::8844 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max/stddev = 35.383/35.542/35.688/0.128 ms

 

I use a MTU of 1500 on my router (1508 on the Ethernet interface and 1500 on PPPoE to account for the 8byte overhead).

 

 







16 posts

Geek


  Reply # 2092882 18-Sep-2018 21:36
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NickMack:

 

Hiya,

 

 

 

We identified an issue a few months back (April) with ipv6 performance, it was to do with queuing from memory and it was resolved - https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=231816&page_no=2#1995373. We have no other known issues with ipv6, other than the current Chorus ONT issue which is affecting customers on all providers nationwide. As discussed, your current testing is inconclusive and appears to be isolated to you (Based on lack of feedback from others and limited data from you). I suspect there is something within your setup at home that maybe causing issues.

 

 

 

If you need some assistance on your connectivity via the Fritzbox, please call customer care on 0800 022 022.

 

 

 

Nick.

 

 

Hey Nick,

 

 

 

Thanks for the response.

 

 

 

Apologies for not getting back to you earlier. Busy with schedule. Are you able to explain/elaborate  for me about the "We have no other known issues with ipv6, other than the current Chorus ONT issue which is affecting customers on all providers nationwide"? Because you indicated that it is affecting all customers on all providers. I wasn't able to find any info on Chorus's site. 

 

 

 

Also, my home setup - are you referring to the setup as in the ONT and the Router? if so, then I can confirm that the home setup has been setup correctly. I followed the instructions the manual you guys provided. The router is connected to the ONT via LAN 1/Port 1. 

 

 

 

I have not ruined my router settings - Only setup my internet connection by creating a SSID for the wifi and doing the setup process wizard. Also, only did what was told by you which was to adjust the Downstream and Upstream and LAN settings are set to Power mode (Home Network/Network Settings/Lan Speed).  https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=239862 

 

Following this, I did do some adjustments with the ipv6 settings by copying exactly your settings which you have provided as photos: https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=240157

 

Unless, the reason why it isn't working could be because of the Chorus ONT issue you indicated before or maybe there needs to be something needed to be entered in the "DNS Server" tab of the Fritzbox as leaving it using the ISP (2degrees) one is not good? or there could be another reason for this issue? 

 

 

 

Either way, if I do have time tomorrow cause I usually go to work on random times of the day, I will follow up with 2D support. In the meantime, if you have any further methods to fix this, I am more than happy to follow on.

 

 

 

EDIT: At the moment, I have unticked the ipv6 box and currently am only using ipv4 since the issue does not show when using only ipv4. 




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Geek


  Reply # 2092883 18-Sep-2018 21:37
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hio77:

 

YummyTech:

 

P.S. Please do not reveal my real name in these posts..please refer to me by my username for privacy. If possible, please kindly edit your post and erase my name. Many thanks. 

 

 

i'd recommend changing your profile settings as your name is public currently.

 

 

 

 

No worries. Thanks for the advice. Have changed my name and have erased it and kept it hidden. Thanks so much :D. Life saver!




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Geek


  Reply # 2092884 18-Sep-2018 21:37
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Mark:

 

I had the same issue ... follow this post exactly!  https://www.geekzone.co.nz/forums.asp?forumid=85&topicid=240157

 

 

Thanks for coming by.

 

Just saw your reply and have already followed those steps in your link and still does not work. Issue still persist :(. 


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