Single IP to use second WAN

RouterOS Beginner Basics
1

Hello,

I’m looking for ideas of only specific ip address to use my second WAN when first WAN is down. My idea is only one pc to have internet when first WAN is down.

Any idea appreciated.

2

Is anything supposed to use second WAN when first WAN is not down? If not, you can just use some standard failover config and block everything else from LAN to WAN2 that isn’t selected device.