I’ve been on Orcon Gigabit fibre for the last 18 months or so without any major issues. But yesterday (10th Dec) at around 2:30pm, my internet became severely crippled. Pretty much every website stopped working. I suspect it's a routing issue, but don't have the networking chops to prove that it is.

For example, I can’t ping or curl trademe.co.nz  , or it’s IP (202.162.73.2). Both work fine when I go via an LTE USB modem. However, I can ping & curl youtube (172.217.25.142) just fine. Viewing youtube in a browser kind of works (even searching works) - the page loads, the thumbnails load, but the main video doesn’t ever load. Using dev-tools to look at the network, that’s because the video itself comes from a different domain something like - r3---sn-j5aa2a0n-jije.googlevideo.com. Which, when I ping & curl, I get no response. Again, going via a USB modem it works fine. Many websites are like this - some of the page might load, but the assets on a CDN may fail. 

Checking the router status, it still reported a connection, with the same IP, gateway & dns I’ve had since I first signed up. Restarting the router & ONT didn’t change anything, nor did restarting PCs on the network.  My PC & a few others are all wired via ethernet. The same issue was occurring on them all, as well as for devices on wifi.

FWIW My router is an TP-Link Archer C7 v2, running firmware 3.15.1 Build 160712

Ringing Orcon support hasn’t got me anywhere as it’s a BYO ‘modem’, and they didn't offer any help whatsoever.

One thing that _may_ have something to do with this, is that I’m scheduled to switch to 2degrees - with the changeover to occur on Jan 14th. When I rung Orcon they have the cancellation as pending in their system (initially they said it was already cancelled, but then they looked closer and verified it was pending with no action taken yet). However, I’d expect anything related to this to be a complete ‘disconnect’ - rather than the half-crippled internet I have now. I’ve also called 2degrees just to make sure they haven’t jumped the gun on the changeover, and they’ve confirmed that nothing has been done yet, the date is still Jan 14th.

So I’m not really sure where to go from here. To me it feels like a routing issue - but normally such things resolve themselves fairly quickly (and generally affect multiple users). I’m fairly confident it’s not on my end - my network configuration hasn't changed and all devices are getting the same behaviour.

I work from home so this is quite a PITA (thankfully the LTE modem means I can limp onwards). Networking isn’t my strong point, so I really don’t know where to begin to try diagnose a routing issue - or what I should be saying to Orcon to point them in the right direction. If anyone is able to help in that regard it would be greatly appreciated.