Before
-------

config interface 'lan'
        option ifname 'eth0.1'
        option force_link '1'
        option type 'bridge'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.1.1'


config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '0t 2 3 4 5'


After
-----

config interface 'lan'
        option ifname 'eth0.1'
        option force_link '1'
        option type 'bridge'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.1.1'


config switch_vlan
        option device 'switch0'
        option vlan '3'
        option ports '0t 2 3 4 5'