/ip firewall mangle
add action=mark-connection chain=prerouting comment=nth_1 connection-state=\
    new disabled=no new-connection-mark=nth_1 nth=6,1 passthrough=yes \
    src-address=192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_1 \
    disabled=no new-routing-mark=routing_1 passthrough=no src-address=\
    192.168.10.0/24
add action=mark-connection chain=prerouting comment=nth_2 connection-state=\
    new disabled=no new-connection-mark=nth_2 nth=5,1 passthrough=yes \
    src-address=192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_2 \
    disabled=no new-routing-mark=routing_2 passthrough=no src-address=\
    192.168.10.0/24
add action=mark-connection chain=prerouting comment=nth_3 connection-state=\
    new disabled=no new-connection-mark=nth_3 nth=4,1 passthrough=yes \
    src-address=192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_3 \
    disabled=no new-routing-mark=routing_3 passthrough=no src-address=\
    192.168.10.0/24
add action=mark-connection chain=prerouting comment=nth_4 connection-state=\
    new disabled=no new-connection-mark=nth_4 nth=3,1 passthrough=yes \
    src-address=192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_4 \
    disabled=no new-routing-mark=routing_4 passthrough=no src-address=\
    192.168.10.0/24
add action=mark-connection chain=prerouting comment=nth_5 connection-state=\
    new disabled=no new-connection-mark=nth_5nth=2,1 passthrough=yes \
    src-address=192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_5 \
    disabled=no new-routing-mark=routing_5 passthrough=no src-address=\
    192.168.10.0/24
add action=mark-connection chain=prerouting comment=nth_6 connection-state=\
    new disabled=no new-connection-mark=nth_6 passthrough=yes src-address=\
    192.168.10.0/24
add action=mark-routing chain=prerouting comment="" connection-mark=nth_6 \
    disabled=no new-routing-mark=routing_6 passthrough=no src-address=\
    192.168.10.0/24

/ip firewall nat
add action=masquerade chain=srcnat comment=1 connection-mark=nth_1 disabled=\
    no out-interface=pppoe-out1
add action=masquerade chain=srcnat comment=2 connection-mark=nth_2 disabled=\
    no out-interface=pppoe-out2
add action=masquerade chain=srcnat comment=3 connection-mark=nth_3 disabled=\
    no out-interface=pppoe-out3
add action=masquerade chain=srcnat comment=4 connection-mark=nth_4 disabled=\
    no out-interface=pppoe-out4
add action=masquerade chain=srcnat comment=5 connection-mark=nth_5 disabled=\
    no out-interface=pppoe-out5
add action=masquerade chain=srcnat comment=6 connection-mark=nth_6 disabled=\
    no out-interface=pppoe-out6
add action=masquerade chain=srcnat comment=nat disabled=no

/ip route
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out2 routing-mark=routing_2
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out3 routing-mark=routing_3
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out4 routing-mark=routing_4
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out1 routing-mark=routing_1
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out5 routing-mark=routing_5
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
    pppoe-out5 routing-mark=routing_6