Cada rede sair por um gw diferente

Gostaria de direcionar cada rede para um gateway diferente.

Cenario:

Gateways:
192.168.1.1
192.168.2.1

Redes:
192.168.20.0/24 - sair por 192.168.1.1
192.168.21.0/24 - sair por 192.168.2.1

Fiz através de marcação de pacotes, mas não está funcionando

/ ip firewall mangle

add chain=prerouting src-address=192.168.20.0/24 protocol=tcp routing-mark=link1 action=mark-routing new-routing-mark=link1 \
passthrough=yes comment="" disabled=no
add chain=prerouting src-address=192.168.20.0/24 protocol=udp routing-mark=link1 action=mark-routing new-routing-mark=link1 \
passthrough=yes comment="" disabled=no

add chain=prerouting src-address=192.168.21.0/24 protocol=tcp routing-mark=link2 action=mark-routing new-routing-mark=link2 \
passthrough=yes comment="" disabled=no
add chain=prerouting src-address=192.168.21.0/24 protocol=udp routing-mark=link2 action=mark-routing new-routing-mark=link2 \
passthrough=yes comment="" disabled=no

/ ip route
add dst-address=0.0.0.0/0 gateway=192.168.1.1 scope=255 target-scope=10 routing-mark=link1 comment="" disabled=no

add dst-address=0.0.0.0/0 gateway=192.168.2.1 scope=255 target-scope=10 routing-mark=link2 comment="" disabled=no

load

/ ip firewall mangle
add chain=prerouting src-address=0.0.0.0/24"rede que vc quer q saia" action=mark-routing new-routing-mark=gtw1 passthrough=no comment="" \
disabled=no
add chain=prerouting src-address=0.0.0.0./24"rede que vc quer q saia" action=mark-routing new-routing-mark=gtw2 passthrough=no \
comment="" disabled=no

/ ip route
add dst-address=0.0.0.0/0 gateway=30.30.30.1 scope=255 target-scope=10 routing-mark=lgtw1 comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=30.30.30.1 scope=255 target-scope=10 routing-mark=gtw2 comment="" disabled=no

Citação:

Postado originalmente por edevaldo

/ ip firewall mangle
add chain=prerouting src-address=0.0.0.0/24"rede que vc quer q saia" action=mark-routing new-routing-mark=gtw1 passthrough=no comment="" \
disabled=no
add chain=prerouting src-address=0.0.0.0./24"rede que vc quer q saia" action=mark-routing new-routing-mark=gtw2 passthrough=no \
comment="" disabled=no

/ ip route
add dst-address=0.0.0.0/0 gateway=30.30.30.1 scope=255 target-scope=10 routing-mark=lgtw1 comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=30.30.30.1 scope=255 target-scope=10 routing-mark=gtw2 comment="" disabled=no

Opa Edivaldo...

Estou utilizando o MK 2.9.27 Crack, a regra as vezes para de funcionar do nada... Vou baixar o MK 3.3 e deixar testando...