91. Mikrotik Failover for Specific IP Pool

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Script:

/ip address
add address=192.168.168.1/24 interface=bridge-LAN network=192.168.168.0
add address=103.28.0.254/30 interface=ether2-WAN2-3972 network=103.28.0.252
add address=103.28.2.254/30 interface=ether1-WAN1-3971 network=103.28.2.252
add address=10.5.50.1/24 interface=wlan1-4Test network=10.5.50.0

/ip pool
add name=LAN ranges=192.168.168.100-192.168.168.250
add name=wifi ranges=10.5.50.2-10.5.50.254

/ip dhcp-server
add address-pool=LAN disabled=no interface=bridge-LAN lease-time=3d name=server-LAN
add address-pool=wifi disabled=no interface=wlan1-4Test lease-time=1h name=server-Wifi
/ip dhcp-server network
add address=10.5.50.0/24 comment="hotspot network" gateway=10.5.50.1
add address=192.168.168.0/24 dns-server=192.168.168.1,103.28.3.187,8.8.8.8 gateway=192.168.168.1

/ip dns
set allow-remote-requests=yes cache-size=5000KiB max-udp-packet-size=512 servers=8.8.8.8,103.28.3.187,8.8.4.4

/ip firewall mangle
add action=mark-routing chain=prerouting comment=LAN1GoWAN2 disabled=yes new-routing-mark=LAN1ToWAN2 passthrough=yes src-address=192.168.168.0/24

/ip firewall nat
add action=masquerade chain=srcnat

/ip route
add distance=3 gateway=103.28.0.253 routing-mark=LAN1ToWAN2
add distance=1 gateway=103.28.2.253

/tool netwatch
add down-script="/ip firewall mangle enable [find where comment =LAN1GoWAN2] " host=103.28.2.253 interval=10s timeout=100ms up-script="/ip firewall mangle disable [find where comment =LAN1GoWAN2] "