/ip address add address=192.168.88.1/24 disabled=no interface=LAN network=192.168.88.0 add address=192.168.25.1/24 disabled=no interface=WAN1 network=192.168.25.0 add address=192.168.50.1/24 disabled=no interface=WAN2 network=192.168.50.0 /ip firewall address-list add address=192.168.88.100-192.168.88.150 comment="Use ISP 1" disabled=no list=ISP1 add address=192.168.88.151-192.168.88.200 comment="Use ISP 2" disabled=no list=ISP2 /ip firewall mangle add action=mark-routing chain=prerouting comment=ISP1 disabled=no new-routing-mark=ISP1 passthrough=yes src-address-list=ISP1 add action=mark-routing chain=prerouting comment=ISP2 disabled=no new-routing-mark=ISP2 passthrough=yes src-address-list=ISP2 /ip route add disabled=no distance=1 dst-address=0.0.0.0/0 gateway=192.168.25.1 routing-mark=ISP1 scope=30 target-scope=10 add disabled=no distance=1 dst-address=0.0.0.0/0 gateway=192.168.50.1 routing-mark=ISP2 scope=30 target-scope=10 /ip firewall nat add action=masquerade chain=srcnat disabled=no src-address=192.168.88.0/24