hmk

Thanks @Zyxel_Kevin but i don't manage site2's Router. @PeterUK i don't think this is it because, the WAN1 is still UP when they add the second IP but as soon as they add the second IP the VPN connection is very bad, a lot of disconnect and it's very slow

Thanks, peer ID is already at Any, and i don't manage site 2 router, i will see with them. i read the page 214 but i don't get how the VPN Gateway will prioritize the interface WAN1 over the WAN2 if we put all interface in "my address"

Site 2 have only 1 IP, and i have ping checker in WAN1 and OPT for 8.8.8.8 for the internet fail over