root@OpenWrt:~# iwlist eth1 scan
eth1      Scan completed :
          Cell 01 - Address: 00:0B:6B:4F:80:A1
                    ESSID:"OpenWrt-public"
                    Mode:Master
                    Channel:6
                    Quality:0/0  Signal level:-27 dBm  Noise level:-95 dBm
                    Encryption key:off
                    Bit Rate:1 Mb/s
                    Bit Rate:2 Mb/s
                    Bit Rate:5.5 Mb/s
                    Bit Rate:6 Mb/s
                    Bit Rate:9 Mb/s
                    Bit Rate:11 Mb/s
                    Bit Rate:12 Mb/s
                    Bit Rate:18 Mb/s
                    Bit Rate:24 Mb/s
                    Bit Rate:36 Mb/s
                    Bit Rate:48 Mb/s
                    Bit Rate:54 Mb/s
          Cell 02 - Address: 06:0B:6B:4F:80:A1
                    ESSID:"OpenWrt-private"
                    Mode:Master
                    Channel:6
                    Quality:0/0  Signal level:-29 dBm  Noise level:-95 dBm
                    Encryption key:off
                    Bit Rate:1 Mb/s
                    Bit Rate:2 Mb/s
                    Bit Rate:5.5 Mb/s
                    Bit Rate:6 Mb/s
                    Bit Rate:9 Mb/s
                    Bit Rate:11 Mb/s
                    Bit Rate:12 Mb/s
                    Bit Rate:18 Mb/s
                    Bit Rate:24 Mb/s
                    Bit Rate:36 Mb/s
                    Bit Rate:48 Mb/s
                    Bit Rate:54 Mb/s

root@OpenWrt:~#