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Currently in Russia, I can confirm that OpenVPN UDP without any extra config (on any port) works on some US, NL and LV servers on mobile networks (MegaFon, MTS). On household connections, regular OpenVPN does not seem to work at all, but regular WireGuard sometimes does. When it doesn't work, the connection handshake usually succeeds, but no traffic passes. But what I wanted to share is that I've had near 100% success (on both household and mobile connections) using the AmneziaWG client with many (most?) AirVPN servers. This is a client that introduces modified handshake parameters intended to fool DPI, while remaining compatible with the vanilla WireGuard server implementation, and it's available for all platforms (you can always compile from source, but at the time of writing there are binaries available at least for Windows, iOS and Mac OS and Android. Linux kernel modules and binaries are also available on Github). Note: there is also an "AmneziaVPN" GUI client but I prefer to use the bare protocol implementation instead. These additional parameters are needed in the WireGuard config file generated by the Config Generator (check the Amnezia documentation for a detailed explanation), and have been verified to work: [Interface] Jc = 3 Jmin = 40 Jmax = 70 S1 = 0 S2 = 0 H1 = 1 H2 = 2 H3 = 3 H4 = 4