In the last week or so I have been unable to connect to my VPN home server using my Phone.
I thought it was an issue with my firewall (Also on BT FTTP).
I have just realised if I use my Three SIM I have no issues but using the BT Mobile SIM both Wireguard and OpenVPN will not connect, not even any probes on the Firewall so looks like it is getting blocked in the BT mobile network before it gets to me.
Is this a recent change or just a fault on the network?
Solved! Go to Solution.
Got it sorted, it looks like there has been a change on the network recently to favour IPv6
Created a new APN for BT on the phone to IPv4 only and all connecting again.