/interface ethernet
set [ find default-name=ether4 ] name=4_FrontDept
set [ find default-name=ether5 ] name=5_IntDept
set [ find default-name=ether9 ] name=9_BellNet
set [ find default-name=ether10 ] name=10_Primus

/ip pool
add name=InternetDept ranges=192.168.3.11-192.168.3.254
add name=FrontDept ranges=192.168.1.11-192.168.1.254

/ip dhcp-server
add address-pool=InternetDept disabled=no interface=5_IntDept name=
    InternetDept
add address-pool=FrontDept disabled=no interface=4_FrontDept name=FrontDept

/port
set 0 name=serial0

/interface pppoe-client
add ac-name="" add-default-route=no allow=pap,chap,mschap1,mschap2
    dial-on-demand=no disabled=no interface=9_BellNet keepalive-timeout=60
    max-mru=1480 max-mtu=1480 mrru=1600 name=Bellnet_ISP password={PASSWORD}
    profile=default service-name="" use-peer-dns=no user={USERNAME}
add ac-name="" add-default-route=no allow=pap,chap,mschap1,mschap2
    dial-on-demand=no disabled=no interface=10_Primus keepalive-timeout=60
    max-mru=1480 max-mtu=1480 mrru=1600 name=Primus_ISP password={PASSWORD}
    profile=default service-name="" use-peer-dns=no user={USERNAME}

/ip address
add address=192.168.3.1/24 interface=5_IntDept network=192.168.3.0
add address=192.168.1.1/24 interface=4_FrontDept network=192.168.1.0

/ip dhcp-server network
add address=192.168.1.0/24 dns-server=8.8.8.8,8.8.4.4 gateway=192.168.1.1
    netmask=24
add address=192.168.3.0/24 dns-server=8.8.8.8,8.8.4.4 gateway=192.168.3.1
    netmask=24

/ip dns
set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4

/ip firewall mangle
add action=mark-connection chain=prerouting connection-mark=no-mark
    in-interface=Bellnet_ISP new-connection-mark=Bell
add action=mark-connection chain=prerouting connection-mark=no-mark
    in-interface=Primus_ISP new-connection-mark=Primus
add action=mark-connection chain=prerouting connection-mark=no-mark
    dst-address-type=!local in-interface=4_FrontDept new-connection-mark=Bell
add action=mark-connection chain=prerouting connection-mark=no-mark
    dst-address-type=!local in-interface=5_IntDept new-connection-mark=Primus
add action=mark-routing chain=prerouting connection-mark=Primus
    dst-address-type=!local new-routing-mark=RouteToPrimus
add action=mark-routing chain=prerouting connection-mark=Bell
    dst-address-type=!local new-routing-mark=RouteToBell
add action=mark-routing chain=prerouting comment=
    "For DNS Server On MikroTik Will Fetch Through Primus Connection"
    connection-mark=no-mark disabled=yes dst-port=53 new-routing-mark=
    RouteToPrimus protocol=udp

/ip firewall nat
add action=masquerade chain=srcnat connection-mark=Bell out-interface=
    Bellnet_ISP
add action=masquerade chain=srcnat connection-mark=Primus out-interface=
    Primus_ISP

/ip route
add distance=2 gateway=Primus_ISP routing-mark=RouteToPrimus
add distance=2 gateway=Bellnet_ISP routing-mark=RouteToBell

/ip firewall mangle
add chain=prerouting dst-address=192.168.1.0/24 action=accept
add chain=prerouting dst-address=192.168.3.0/24 action=accept

/ip route
add distance=1 dst-address=192.168.3.0/24 gateway=5_IntDept routing-mark=RouteToPrimus
add distance=1 dst-address=192.168.1.0/24 gateway=4_FrontDept routing-mark=RouteToBell