Bemásolom az egész configot hátha ez segít:

root@OpenWrt:~# vi /etc/config/network
option 'netmask' '255.255.255.0'

config 'interface' 'wan'
option 'ifname' 'eth0.2'
option 'proto' 'pppoe'
option 'username' 'felhaszn'
option 'password' 'jelszo'

config 'switch'
option 'name' 'rtl8366rb'
option 'reset' '1'
option 'enable_vlan' '1'

config 'switch_vlan'
option 'device' 'rtl8366rb'
option 'vlan' '1'
option 'ports' '1 2 3 4 5t'

config 'switch_vlan'
option 'device' 'rtl8366rb'
option 'vlan' '2'
option 'ports' '0 5t'