Aqui estão algumas saídas:
root@debian:/home/love# iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"SITI_Broadband-06E6-G"
Mode:Managed Frequency:2.412 GHz Access Point: FC:4A:E9:4B:06:E8
Bit Rate=15 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=54/70 Signal level=-56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:202 Missed beacon:0
Percebi que o valor aumenta com o tempo e meu wifi permanece conectado, mas a Internet pára de funcionar.
Tags error-handling debian wlan