Load Balance! 3 ADSL ajuda

Peguei esta configuracao para loadbalance e gostaria de mais orientações de como realizar.

- Os modem tem que estar roteados ou devo usar um roteadores depois do modem para discar e atribuir dhcp para o mk?
- Onde tem ? o que devo colocar?
- Estas regras vão me dar instabilidade aos acessos a bancos, msn, orkut e velocidade?

'''/ ip address'''
add address=192.168.0.1/24 network=192.168.0.0 broadcast=192.168.0.255 interface=Local
add address=10.111.0.2/24 network=10.111.0.0 broadcast=10.111.0.255 interface=wlan1
add address=10.112.0.2/24 network=10.112.0.0 broadcast=10.112.0.255 interface=wlan2
add address=10.113.0.2/24 network=10.113.0.0 broadcast=10.113.0.255 interface=wlan3

'''/ ip firewall mangle'''
add chain=prerouting src-address-list=odd in-interface=Local action=mark-connection \
new-connection-mark=odd passthrough=yes
add chain=prerouting src-address-list=odd in-interface=Local action=mark-routing \
new-routing-mark=odd passthrough=no
add chain=prerouting src-address-list=even in-interface=Local action=mark-connection \
new-connection-mark=even passthrough=yes
add chain=prerouting src-address-list=even in-interface=Local action=mark-routing \
new-routing-mark=even passthrough=no
add chain=prerouting src-address-list=? in-interface=Local action=mark-connection \
new-connection-mark=? passthrough=yes
add chain=prerouting src-address-list=? in-interface=Local action=mark-routing \
new-routing-mark=? passthrough=no
add chain=prerouting in-interface=Local connection-state=new nth=1,1,0 \
action=mark-connection new-connection-mark=odd passthrough=yes
add chain=prerouting in-interface=Local action=add-src-to-address-list \
address-list=odd address-list-timeout=1d connection-mark=odd passthrough=yes
add chain=prerouting in-interface=Local connection-mark=odd action=mark-routing \
new-routing-mark=odd passthrough=no
add chain=prerouting in-interface=Local connection-state=new nth=1,1,1 \
action=mark-connection new-connection-mark=even passthrough=yes
add chain=prerouting in-interface=Local action=add-src-to-address-list \
address-list=even address-list-timeout=1d connection-mark=even passthrough=yes
add chain=prerouting in-interface=Local connection-mark=even action=mark-routing \
new-routing-mark=even passthrough=no
add chain=prerouting in-interface=Local connection-state=new nth=1,1,2 \
action=mark-connection new-connection-mark=? passthrough=yes
add chain=prerouting in-interface=Local action=add-src-to-address-list \
address-list=? address-list-timeout=1d connection-mark=? passthrough=yes
add chain=prerouting in-interface=Local connection-mark=? action=mark-routing \
new-routing-mark=? passthrough=no

'''/ ip firewall nat'''
add chain=srcnat connection-mark=odd action=src-nat to-addresses=10.111.0.2 \
to-ports=0-65535
add chain=srcnat connection-mark=even action=src-nat to-addresses=10.112.0.2 \
to-ports=0-65535
add chain=srcnat connection-mark=even action=src-nat to-addresses=10.113.0.2 \
to-ports=0-65535

'''/ ip route'''
add dst-address=0.0.0.0/0 gateway=10.111.0.1 scope=255 target-scope=10 routing-mark=odd
add dst-address=0.0.0.0/0 gateway=10.112.0.1 scope=255 target-scope=10 routing-mark=even
add dst-address=0.0.0.0/0 gateway=10.113.0.1 scope=255 target-scope=10 routing-mark=?
add dst-address=0.0.0.0/0 gateway=10.112.0.1 scope=255 target-scope=10



O que seria este complemento?

add chain=prerouting in-interface=Local connection-state=new nth=1,1,1 \
src-address-list=!odd action=mark-connection new-connection-mark=even \
passthrough=yes