root@OpenWrt:~# iwlist scan
br-wan    Interface doesn't support scanning.

ifb0      Interface doesn't support scanning.

gre0      Interface doesn't support scanning.

eth0.1    Interface doesn't support scanning.

lo        Interface doesn't support scanning.

gretap0   Interface doesn't support scanning.

ra0       Interface doesn't support scanning : Operation not supported

eth0      Interface doesn't support scanning.

rai0      Interface doesn't support scanning : Operation not supported

ifb1      Interface doesn't support scanning.

apcli0    Interface doesn't support scanning : Operation not supported

br-lan    Interface doesn't support scanning.

eth0.2    Interface doesn't support scanning.

apclii0   Interface doesn't support scanning : Operation not supported