after ifup wlan0

wlan0	IEEE 802.11 ESSID:"<MY SSID>"
	Mode:Managed    Frequency:2.412 GHz    Access Point: Not-Associated
	Tx-Power=20 dBm
	Retry min limit:7    RTS thr:off    Fragment thr=2352 B
	Encryption key: <ENCRYPTED KEY>
	Link Quality:0    Signal level:0    Noise level:0
	Rx invalid nwid:0    Rx invalid crypt:0    Rx invalid frag:0
	Tx excessive retries:0    Invalid misc:0    Missed beacon:0