Facebook slow on 2degrees IPv6

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Facebook slow on 2degrees IPv6

timmmay

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#215386 25-Jun-2017 14:06

I turned on IPv6 yesterday, just to test my server's connectivity. In general most websites work fine, but Facebook is slow. It sometimes takes ages to load, but the initial load is usually ok. It's when I scroll down the news feed that's slow - it sometimes won't even load anything beyond 1-2 stories.

Chrome and Firefox are the same. I can't even get it to load right now.

Anyone else had this? Any solution? I can easily turn IP6 off, but it might be interesting to try to get it working.

[Mod: MM - Moved to correct subform]

michaelmurfy

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#1806395 25-Jun-2017 14:34

Sounds like a MTU issue on your IPv6 perhaps? What kind of router are you using?

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timmmay

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#1806399 25-Jun-2017 14:47

Fritz 7390, default settings for it and Windows. Any suggestions to fix?

michaelmurfy

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#1806402 25-Jun-2017 14:49

Strange... The Fritz should work out of the box with this sort of thing. I don't have much recent experience with 2degrees V6 + the Fritz so may be best for somebody else to comment. Does it work with other devices or if you boot your PC into a Linux live distro?

timmmay

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#1806475 25-Jun-2017 16:50

I'll see if my wife has had any problems on her laptop, which is Windows 10 as well. I'll have a go at a linux live distro when I get time, maybe tomorrow.

Lorenceo

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#1806695 25-Jun-2017 23:08

I used to get this. It was because my router was announcing to the LAN on the RA's that the connection had 1500 MTU when it is actually 1492. After fixing that the problem vanished.

Can't comment on how well the Fritzboxes do with v6. Mine only functions as an ATA.

nzkc

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#1806715 26-Jun-2017 06:01

Interesting. I've been having some ongoing discussions with 2d (via twitter) about Facebook videos buffering and only ever facebook videos. Youtube, Netflix, Lightbox, etc are all fine - never any issues. Of course theyre giving me usual approaches and messages which I take to imply its at my end. Tried different devices, different browsers etc. All the same.

Its a relatively new issue too. Maybe the last month or so.

I have the same router as the OP.

So I might give fixing the MTU a go as a test.

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timmmay

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#1806721 26-Jun-2017 07:33

I think that was it - MTU was too high.

I use the process on a page GZ won't let me link to determine my MTU for ip4, which was 1496. Previously it was 1500. Key commands below

netsh interface ipv4 show subinterfaces

ping www.google.com -f -l 1500

Reduce the number in the ping until you find one that works, then add 28 to it. There's a reason, but I can't be bothered typing out why.

These command appeared to have fixed it, but obviously it's ip4 and it got worse again

netsh interface ipv4 set subinterface Ethernet mtu=1496 store=persistent

I did IP6 pings of Google until I found a number that worked.

ping -6 -l 1412 www.google.com

netsh interface ipv6 show subinterfaces

netsh interface ipv6 set subinterface Ethernet mtu=1412 store=persistent

Interesting resource on this page.

timmmay

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#1806723 26-Jun-2017 07:48

Unfortuntaely Google RecatchPa v2 doesn't work at all on 2deg IP6, at least not for me. It sometimes half works, but I can't validate. I need to validate using RecatchPa every time I test my own website contact forms.

I'd like to use IP6, but it's just not ready.

timmmay

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#1807042 26-Jun-2017 15:36

I tested Firefox on Ubuntu 16.04, Facebook worked fine with an MTU of 1500.

I booted back into Windows, which is using an MTU of 1492, Facebook and Google catchpa are both working fine. Odd, but good.

The inconsistency is a bit annoying though.

timmmay

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#1807046 26-Jun-2017 15:40

Aaaaand it's slow on Facebook again. I'm going to turn IPv6 off for now. I suspect the problem is Windows, not Facebook or 2degrees.

Lorenceo

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#1807105 26-Jun-2017 17:31

My primary OS is W7. Recaptcha works as expected.

Try a different router IMO.

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#1807132 26-Jun-2017 18:03

Is it definitely just Facebook having issues or is it other IPv6 sites as well, such as YouTube? I had issues with IPv6 on BigPipe purely because the onboard Intel NIC could not handle it properly (issues on two computers, both with the onboard NIC being the problem) so maybe try a different NIC if you have one spare.

timmmay

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#1807242 26-Jun-2017 20:57

I don't have another NIC, and it worked fine in Ubuntu 16.04. I didn't try other sites explicitly, but I know Geekzone worked just fine.

nzkc

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#1809228 29-Jun-2017 21:28

Only found facebook to be an issue - everything else I've tried has been fine.

And the comment about try another NIC: well it used to be fine on this PC for ages. This seems a recent problem.

nzkc

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#1809245 29-Jun-2017 21:57

Definitely a 2degrees issue. Just tried using my cellphone (on the Spark network) as a hot spot vs 2degrees vdsl playing facebook videos. No problem via the phone, all kinds of buffering on VDSL.

Grabbed a network graph through Chrome developer tools. Shows its network related. Note the ms vs seconds when downloading video chunks!

Spark hotspot:

2degrees vdsl: