Mine

nvram set vlan2_bridged=0
nvram set vlan3_bridged=0
nvram set vlan4_bridged=0
nvram set vlan0ports="5*"
nvram set vlan1ports="4 5t"
nvram set vlan2ports="3t 5t"
nvram set vlan3ports="3t 5t"
nvram set vlan4ports="3t 5t"
nvram commit

ifconfig vlan2 up
ifconfig vlan3 up
ifconfig vlan4 up

brctl delif br0 wl0.1 
brctl delif br0 wl0.2 
brctl delif br0 wl0.3 

brctl addbr br1
brctl addif br1 wl0.1 
brctl addif br1 vlan2 

brctl addbr br2
brctl addif br2 wl0.2 
brctl addif br2 vlan3 

brctl addbr br3
brctl addif br3 wl0.3 
brctl addif br3 vlan4 

ifconfig br1 172.16.1.3 netmask 255.255.255.0 up
ifconfig br2 172.16.2.3 netmask 255.255.255.0 up
ifconfig br3 172.16.3.3 netmask 255.255.255.0 up

kill -9 `cat /tmp/nas.wl0.1lan.pid`
kill -9 `cat /tmp/nas.wl0.2lan.pid`
kill -9 `cat /tmp/nas.wl0.3lan.pid`

nas -P /tmp/nas.wl0.1lan.pid -H 34954 -l br1 -i wl0.1 &
nas -P /tmp/nas.wl0.2lan.pid -H 34954 -l br2 -i wl0.2 &
nas -P /tmp/nas.wl0.3lan.pid -H 34954 -l br3 -i wl0.3 &