I have two RV016 that works very well with a VPN . Two both routers have two WAN connections (each one). The problem is when WAN1 fails (because the Internet fails) tunnel goes down, and the only way to fix this is if I change the WAN1 cable by the WAN2. I know that RV082 has Tunnel Backup, but RV016 doesn´t. What is the best way to make work two WANs with one Tunnel?