meu caro tenho aqui 2 link em uma so placa fazendo ppc esta assim
interface list => local, wlan1

Aqui esta a lista das duas interface e seus respectivos endereços
coloquei a mesma faixa de ip mas com mascara diferente para os links nao testei com faixas diferentes
/ip address
add address=10.0.0.1/24 broadcast=10.0.0.255 comment="" disabled=no \
interface=Local network=10.0.0.0
add address=192.168.1.2/29 broadcast=192.168.1.7 comment="" disabled=no \
interface=wlan1 network=192.168.1.0
add address=192.168.1.12/29 broadcast=192.168.1.15 comment="" disabled=no \
interface=wlan1 network=192.168.1.8

nos dns estou usando do google
/ip dns static
add address=8.8.8.8 disabled=no name=Google ttl=1d
add address=8.8.4.4 disabled=no name=Google2 ttl=1d

aqui estao alguns dominios fora do pcc
/ip firewall address-list
add address=64.0.0.0/8 comment=YOUTUBE disabled=no list=youtube
add address=72.0.0.0/8 comment="" disabled=no list=youtube
add address=84.0.0.0/8 comment="" disabled=no list=youtube
add address=208.65.153.224/27 comment="" disabled=no list=youtube
add address=209.85.239.0/24 comment="" disabled=no list=youtube
add address=200.140.120.29 comment=MEDIDOR disabled=no list=medidor
add address=200.159.128.189 comment="" disabled=no list=medidor
add address=209.160.32.66 comment="" disabled=no list=medidor
add address=64.247.18.18 comment="" disabled=no list=medidor
add address=200.159.160.39 comment="" disabled=no list=medidor
add address=213.200.107.145 comment="" disabled=no list=medidor
add address=200.245.0.12 comment="" disabled=no list=medidor
add address=201.76.32.191 comment="" disabled=no list=medidor
add address=200.150.160.39 comment="" disabled=no list=medidor
add address=201.20.64.39 comment="" disabled=no list=medidor
add address=66.216.44.80 comment="" disabled=no list=medidor
add address=200.181.108.29 comment="" disabled=no list=medidor
add address=200.196.233.42 comment="" disabled=no list=medidor
add address=200.233.43.14 comment="" disabled=no list=medidor
add address=201.84.0.28 comment="" disabled=no list=medidor
add address=200.162.192.57 comment="" disabled=no list=medidor
add address=216.196.97.131 comment="" disabled=no list=medidor
add address=216.196.109.144 comment="" disabled=no list=medidor
add address=208.109.101.166 comment="" disabled=no list=medidor
add address=80.69.70.75 comment="" disabled=no list=medidor
add address=67.15.120.26 comment="" disabled=no list=medidor
add address=65.203.23.136 comment="" disabled=no list=medidor
add address=200.187.80.5 comment="" disabled=no list=medidor
add address=200.185.109.83 comment="" disabled=no list=medidor
add address=75.126.169.192 comment="" disabled=no list=medidor
add address=200.139.87.110 comment="" disabled=no list=medidor
add address=208.69.32.137 comment="" disabled=no list=medidor
add address=201.20.64.38 comment="" disabled=no list=medidor
add address=209.164.48.156 comment="" disabled=no list=medidor
add address=216.239.122.220 comment="" disabled=no list=medidor
add address=209.123.109.175 comment="" disabled=no list=medidor
add address=64.29.201.21 comment="" disabled=no list=medidor
add address=217.160.227.58 comment="" disabled=no list=medidor
add address=62.81.199.129 comment="" disabled=no list=medidor
add address=189.44.2.142 comment="" disabled=no list=medidor
add address=201.84.0.20 comment="" disabled=no list=medidor
add address=201.84.0.23 comment="" disabled=no list=medidor
add address=200.171.222.90 comment="" disabled=no list=medidor
add address=200.171.222.89 comment="" disabled=no list=medidor
add address=200.234.220.61 comment="" disabled=no list=medidor
add address=189.10.40.20 comment=TJ.MT.GOV.BR disabled=no list=sem_balance
add address=200.242.230.2 comment="CONECTIVIDADE SOCIAL" disabled=no list=\
sem_balance
add address=200.201.174.0/24 comment="" disabled=no list=sem_balance
add address=200.201.173.0/24 comment="" disabled=no list=sem_balance
add address=200.201.166.0/24 comment="CONECTIVIDADE SOCIAL" disabled=no list=\
sem_balance
add address=209.85.141.87 comment=ORKUT disabled=no list=sem_balance
add address=64.0.0.0/8 comment="" disabled=no list=sem_balance
add address=72.0.0.0/8 comment="" disabled=no list=sem_balance
add address=200.98.249.25 comment="RADIO UOL" disabled=no list=sem_balance
add address=200.186.158.194 comment=SKY.TV.BR disabled=no list=sem_balance
add address=200.221.5.78 comment="RADIO UOL" disabled=no list=sem_balance
add address=200.221.5.80 comment="" disabled=no list=sem_balance
add address=200.155.80.0-200.155.255.255 comment=BRADESCO disabled=no list=\
sem_balance
add address=200.220.186.0/24 comment="" disabled=no list=sem_balance
add address=200.220.178.0/24 comment=BRADESCO disabled=no list=sem_balance
add address=64.38.29.0/24 comment=RapidShare disabled=no list=sem_balance
add address=208.69.32.0/24 comment="" disabled=no list=sem_balance
add address=208.67.217.0/24 comment="" disabled=no list=sem_balance
add address=201.7.178.0/24 comment="" disabled=no list=sem_balance
add address=201.7.176.0/24 comment="" disabled=no list=sem_balance
add address=200.159.128.0/24 comment="" disabled=no list=sem_balance
add address=201.7.176.0/20 comment="Videos - Globo" disabled=no list=\
sem_balance
add address=208.84.247.0/24 comment="Videos - terratv" disabled=no list=\
sem_balance
add address=200.154.56.0/24 comment="Vdeos - terratv" disabled=no list=\
sem_balance
add address=200.201.160.0/24 comment="Caixa Economica Federal" disabled=no \
list=sem_balance
add address=200.141.207.3 comment=Detran disabled=no list=sem_balance

/ip firewall filter
add action=accept chain=input comment="" disabled=no in-interface=!wlan1 \
src-address=192.168.1.0/24
aqui no mangle esta as regras para fora do ppc e o peso de cada link no mesmo
no caso sao 2 links de 1024 kb
/ip firewall mangle
add action=accept chain=prerouting comment="SEM BALANCE" disabled=no \
dst-address-list=sem_balance in-interface=Local
add action=mark-connection chain=input comment="MARK BALANCE" disabled=yes \
in-interface=wlan1 new-connection-mark=wlan1_conn passthrough=yes
add action=mark-routing chain=output comment="" connection-mark=wlan1_conn \
disabled=yes new-routing-mark=to_wlan1 passthrough=yes
add action=accept chain=prerouting comment="" disabled=no dst-address=\
192.168.1.0/24 in-interface=Local
add action=mark-connection chain=prerouting comment="PESO DO BALANCE" \
disabled=no dst-address-type=!local in-interface=Local \
new-connection-mark=wlan1_conn passthrough=yes per-connection-classifier=\
both-addresses:2/0
add action=mark-connection chain=prerouting comment="" disabled=no \
dst-address-type=!local in-interface=Local new-connection-mark=wlan2_conn \
passthrough=yes per-connection-classifier=both-addresses:2/1
add action=mark-routing chain=prerouting comment="TRAFICO DO BALANCE" \
connection-mark=wlan1_conn disabled=no in-interface=Local \
new-routing-mark=to_wlan1 passthrough=yes
add action=mark-routing chain=prerouting comment="" connection-mark=\
wlan2_conn disabled=no in-interface=Local new-routing-mark=to_wlan2 \
passthrough=yes
add action=mark-connection chain=prerouting comment="MARK P2P" disabled=no \
new-connection-mark=p2p_conn p2p=all-p2p passthrough=yes
add action=mark-packet chain=prerouting comment="" connection-mark=p2p_conn \
disabled=no new-packet-mark=p2p passthrough=no
add action=mark-connection chain=prerouting comment="MARK YOUTUBE" disabled=\
no new-connection-mark=youtube_conn passthrough=yes src-address-list=\
youtube
add action=mark-packet chain=prerouting comment="" connection-mark=\
youtube_conn disabled=no new-packet-mark=youtube passthrough=yes
add action=mark-connection chain=prerouting comment=MEDIDORES disabled=no \
dst-address-list=medidor new-connection-mark=medidorC passthrough=yes
add action=mark-packet chain=prerouting comment="" connection-mark=medidorC \
disabled=no new-packet-mark=medidorF passthrough=no
add action=mark-connection chain=input comment="" disabled=no \
dst-address-list=medidor new-connection-mark=medidorC passthrough=yes
add action=mark-packet chain=input comment="" connection-mark=medidorC \
disabled=no new-packet-mark=medidorF passthrough=no
add action=mark-connection chain=output comment="" disabled=no \
dst-address-list=medidor new-connection-mark=medidorC passthrough=yes
add action=mark-packet chain=output comment="" connection-mark=medidorC \
disabled=no new-packet-mark=medidorF passthrough=no
add action=mark-connection chain=postrouting comment="" disabled=no \
dst-address-list=medidor new-connection-mark=medidorC passthrough=yes
add action=mark-packet chain=postrouting comment="" connection-mark=medidorC \
disabled=no new-packet-mark=medidorF passthrough=no
add action=change-mss chain=forward comment="CHANGE MSS" disabled=no \
dst-port=80,1863 new-mss=1300 protocol=tcp tcp-flags=syn

/ip route
add check-gateway=ping comment="" disabled=no distance=1 dst-address=\
0.0.0.0/0 gateway=192.168.1.11 routing-mark=to_wlan1 scope=30 \
target-scope=10
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
192.168.1.11 scope=30 target-scope=10
add check-gateway=ping comment="" disabled=no distance=2 dst-address=\
0.0.0.0/0 gateway=192.168.1.1 routing-mark=to_wlan2 scope=30 \
target-scope=10

meu caro acho q so isso resolve uso assim se puder ajudar em mas alguma coisa