How to capture packages via TCPdump on three wlan interfaces at the same time?
I have an RPI that has three wlan interfaces wlan0, wlan1 & wlan2. Each interface is set to a referring channel.
My command is
PHP Code:
/usr/sbin/tcpdump -l -I -n -e -tt -i wlan0 type mgt subtype probe-req
I have been trying to run the capture on all three interfaces at the same time but seem to be struggling.
I have read that i can use "-i any" but i get an error saying
Quote:
"tcpdump: any: That device doesn't support monitor mode"
I presume its referring to eth0 and lo interfaces.
I have also tried
PHP Code:
/usr/sbin/tcpdump -l -I -n -e -tt -i wlan0 type mgt subtype probe-req & /usr/sbin/tcpdump -l -I -n -e -tt -i wlan1 type mgt subtype probe-req & /usr/sbin/tcpdump -l -I -n -e -tt -i wlan2 type mgt subtype probe-req
But it pretty much kills the RPI and i get undervoltage errors plus no packets are captures on any interfaces.
Is there a way around this, the RPI boots up and runs the capture as a script.
