config interface 'wan1'
    option proto '3g'
    option device '/dev/ttyUSB0'
    option ifname '3g-wan1'
    option service 'umts'
    option apn 'darmowy'
    option defaultroute '0'
    option peerdns '0'
    option metric '10'

config interface 'wan2'
    option proto '3g'
    option device '/dev/ttyUSB3'
    option ifname '3g-wan2'
    option service 'umts'
    option apn 'darmowy'
    option defaultroute '0'
    option peerdns '0'
    option metric '20'

config interface 'wan3'
    option proto '3g'
    option device '/dev/ttyUSB6'
    option ifname '3g-wan3'
    option service 'umts'
    option apn 'darmowy'
    option defaultroute '0'
    option peerdns '0'
    option metric '30'

config route
    option interface 'wan1'
    option target '10.0.0.0'
    option netmask '0.0.0.0'
    option gateway '10.64.64.64'

config route
    option interface 'wan2'
    option target '10.0.0.0'
    option netmask '0.0.0.0'
    option gateway '10.64.64.65'

config route
    option interface 'wan3'
    option target '10.0.0.0'
    option netmask '0.0.0.0'
    option gateway '10.64.64.66'