this post was submitted on 09 Dec 2023
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It too me a while to work out why my Nextcloud stuff wasn't working on my phone. It wasn't until I went to http://duckdns.org on mobile data I saw the block. I had changed ISP from one with IPv6, which I had setup, to an ISP without it, and thought it might be that. But it was just coincidence.

I've written to O2 but I doubt they will change anything, so I'll be changing network.

So heads up UK O2 self hosting people!

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[–] [email protected] 1 points 10 months ago (1 children)

Interesting.

I have no idea how the piggyback operators work (ie, purely financial, nothing technical?), but a quick check shows Tesco (uses O2) responds the same way.

I'm lucky to have static IPs, but I have a noip.com and that appears to work ok, so it can't be a blanket policy on dynamic DNS per se.

[–] [email protected] 2 points 10 months ago

Giffgaff uses o2 and also blocks duckdns. Additionally, whatever blocklist my employer is using also blocks it, so it's probably a common thing now.