IP Traffic Monitor already listening on eth0

If you get this “IP Traffic Monitor already listening on eth0” error when you are trying to use iptraf:

IP Traffic Monitor already listening on eth0

Or any other interface like eth1 or wlan0 and so on…

Be sure that you don’t have any iptraf applications running:

ps ax|grep iptraf

and after that you […]

Canon 5D Mark II and Err 20

I started to test my Neutral Density filters with my Canon 5D Mark II and Canon 70-200 2.8 IS USM lens but after a first photo I got “Err20: can’t take picture, turn off and back on…” error to my camera screen. I turned my camera off and removed the batter and tried again with […]