We have a very random use case, where our end devices need a full end to end VPN tunnel, the end devices connect to Wi-Fi on a 4G router. We have discovered that some 4G providers appear to be restricting OpenVPN connections. I tried tunnelling these connections over Zero Tier from the 4G router, but still had issues, how is this possible? as the provider should not be able to see inside the Zero Tier Tunnel.
Has anyone else seen any thing like this?