All well and nice but I have several pfSense boxes at several client locations and all work except one.
I've checked and double checked each and every setting, deleted it and recreated it, but it still keeps saying 'Gateway authentication error' and 'invalid ID_V1 payload length, decryption failed?' after the upgrade to 2.2.4 (I skipped 2.2.3)
To be precise, I copied the configuration from exact the same hardware appliance box, just to rule out hardware dependencies.