Aberdeen - dreadful speeds tonight - line congestion?

[jellyman]

On CityFibre 900 and speeds are near unusable. Switched to the mobile dongle and they were even worse.

What is going on?

[Ripshod]

Strange things here. Since I reconnected IPv4 has behaved but IPv6 is still playing up. Half way there at least 🤣

[RebelRose]

I guess different behaviour between IPv4 and IPv6 would suggest routing issues, which also explains why a VPN changes things. I'm using IPv4 -- is this typically the better behaved of the two?

You'd imagine IPv4 would be worse, with IPSs throwing up those carrier-grade NATs in front of us to deal with the limited number of IP addresses.

[RebelRose]

I just made a post on the Aberdeen Reddit page if anyone wants to follow along there. I'm trying to find out if it's a Vodafone problem or a CityFibre problem by seeing what other people experience on different ISPs. 

[Ripshod]

Peeps. It's not just Cityfibre - openreach is affected too. It's a vodafone problem, and they're covering it up by blaming Cityfibre. 

[user99]

Well it went all to s*$t really quickly with me, back up to 20% packet loss and speeds below 500Mb (on a 900Mb connection) between 6pm and midnight (packet loss and speed drop peaks at around 9pm). I checked packet loss not only with Thinkbroadband's 'Broadband Quality Monitor' but with 'PacketLossTest (dot) com', this shows that the packet loss is all on the download side, no packet loss on upload, this matches with the download speeds dropping to below 500Mb but upload speeds more-or-less unaffected. The other parameter that's affected is latency which for me is (constantly) slightly over 20ms, on FTTP this should be (from what I've seen of others on FTTP) less than 10ms and more like 5ms at the worst. I think in the rush to get FTTP out to the masses in line with governmental edicts CityFibre, and probably Openreach, have cut some corners just so they can say they have reach the required goals of FTTP roll-out. I've been looking for an ISP that does the shortest contract and found one I've never heard of 'Cuckoo (dot) co', they do 900Mb for 12 months at £47/month, more expensive than Vodafone but if they are s*$t too I don't have to wait 2 years for the contract to end. Zen do 18 months at £40/month so I still may go with them.

[Ripshod]

I've mentioned it before for others but I'm not sure if I did to yourself, but a latency like that would indicate poor routing, ie, your data is travelling a huge distance (possibly across the whole country) before it even meets your gateway and the Internet spine. Bad for latency and speed. 

[RebelRose]

Yeah I feel you man. Judging from the responses I'm getting on the Aberdeen subreddit, it's not CityFibre or Openreach, it's just Vodafone. 

It'll be over 400 quid for me to quit early, but it's either that or I stick to single player games and DVDs until Xmas next year, lol.

[Ripshod]

I've been through things like this a few times over, I guess, four years now. These things have a habit of sorting themselves out.

A couple of nights ago I rebooted my router to get a new IP snd the fault stopped, but only for IPv4. What I have seen is if the IP matches my gateway (90.246.***.***) the fault disappears. Right now my IP is 81.77.***.***, and I'm experiencing this problem.

Anyone want to tell me this is not a vodafone routing issue? 

[RebelRose]

It sounds like you might have a reasonably practical way to work around the issue somewhat? That might tide a lot of us over until contracts run out .

What is it you've discovered? If you are assigned an IP address where the first 2 octets match your gateway IP, the issue goes away?

And one can continually restart their router to win this IP lottery? Any other tips to work around it that you've found?

[Ripshod]

It's a random IP, and it's a lottery every time you reboot. I'm not wanting to reboot for a local IP in case I end up back on the Edinburgh gateway (again) - nothing against Scotland but I'm in Yorkshire.