Fibre down speed b0rked...unless I use VPN!

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Fibre down speed b0rked...unless I use VPN!

Item

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#298876 24-Jul-2022 06:33

I m on 2D Gigabit fibre which has always run at pretty much max speeds.

Friday night noticed erratic browsing speeds and stuttering video streaming, but went to bed and thought nothing of it. Connection continued sucking on Saturday with downloads stalling, browsing slow and sometimes not fully loading pages.

Much troubleshooting later.

-Download speeds wobble from 10 to 50 and general browsing and streaming is rough. "real life" download speeds seem worse than the speed test would suggest, i.e from App store.
-Upload speeds sit comfortably and consistently at max - around 500.
-Issue persists with both current Ubiquiti Edge router X plus mesh wifi or when going back to original Fritzbox issued by 2D.
-Issue is same whether wireless or wired and on any/all my devices - Win, Mac, IOS.
-Issue persists after requesting a different fixed IP and after going back to Dynamic IP (did have a similar issue when they assigned me a fixed IP from a range that they shouldn't have!)

If i connect my software VPN on any of my devices, the issue seems to resolve and I get a stable browsing experience and download speeds around 400m down, which i assume is limited by the VPN service itself. Disconnect VPN and I am back to 10-50 again along with a generally rough browsing experience.

2D have assured me that I am not somehow being mistakenly throttled (unlimited max plan) and have passed to Chorus.

Do any of the geekzone gurus have any ideas what could be going on here?

timmmay

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#2945756 24-Jul-2022 07:53

Weird. I wonder if there's a weird routing problem or if your IP has been doubly allocated.

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#2945758 24-Jul-2022 07:57

timmmay:

Weird. I wonder if there's a weird routing problem or if your IP has been doubly allocated.

The latter was what I suspected initially as the symptoms are almost identical to when I first got my fixed IP and they gave me something in a range that they shouldn't have!

We did test this last night though - they allocated me 2 different fixed IPs and put me back on dynamic and the issue remained...

So yes - the former is now the only thing I could think of! I have sent them a tracert to look at and now I am just waiting to see what they come back with.

Not a showstopper - other than PS5 downloads and video streaming on my TV, I can just use my VPN to resume normal service...

But yeah - weird, innit!

timmmay

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#2945760 24-Jul-2022 08:34

I wonder if it's something odd on your router. Don't suppose you have a spare router you can try? And of course reboot ONT / router / computer and ensure you test on ethernet.

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#2945818 24-Jul-2022 10:03

timmmay:

I wonder if it's something odd on your router. Don't suppose you have a spare router you can try? And of course reboot ONT / router / computer and ensure you test on ethernet.

As above, I have tried with both my Edgerouter X and the 2D Fritzbox - same result.

ONT rebooted several times.

Result is same whether ethernet or WiFi

So definitely seems to be some kind of config/routing issue on the 2D/Chorus side?

MrGadget

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#2946106 25-Jul-2022 08:39

How did you get on?

Any improvements as a result of Chorus?

Any comment made here is my own and should not be taken as that of my employer.

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#2946116 25-Jul-2022 09:15

MrGadget:

How did you get on?

Any improvements as a result of Chorus?

Doesn't look like anything more was done over the weekend and I pretty much had to start again with them this morning.

I have been on the phone to them for the last hour and am going through all the same troubleshooting steps for a 3rd time....

That said, it seems like the technician this morning actually knows what he is doing and is ensuring everything is captured and saved for the T2 team to look at, so we will see what they come back with.

Apple TV

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#2946561 26-Jul-2022 15:36

So still waiting on a resolution and for the mysterious "T2" team to come back to me.

Issue persists from Friday night and no-one has any idea...

MrGadget

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#2949036 1-Aug-2022 12:27

Just to close out, I believe we have resolved the issue, which was a pretty weird one, and came down to an issue with the IPv6 IP address misbehaving.

Thankyou @Item for your patience and prompt assistance with a fair amount of trial and error while we worked through everything.

Any comment made here is my own and should not be taken as that of my employer.

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#2949038 1-Aug-2022 12:31

MrGadget:

Just to close out, I believe we have resolved the issue, which was a pretty weird one, and came down to an issue with the IPv6 IP address misbehaving.

Thankyou @Item for your patience and prompt assistance with a fair amount of trial and error while we worked through everything.

✌

Cheers MrGadget for digging deep on this one and reaching out.

Indeed it really was a strange one, so appreciate your tenacity!