@MR.S standalone or controller mode?

@Vincent-TP I followed that tutorial but this appears

@MR.S I have already created a second tunnel on different WAN port but when I try to create the failover shows me this

Hi! You can't create a IPsec Failover Group in firmware version 5.15.20.20 (Linux) altough having two already working configured tunnels. (Router ER605, V2.0, Firmware Versión 2.2.6 Build 20240718...