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Draft of capture.sh script

   #!/bin/sh

case $1 in
e|-e)
ifconfig msh0 down
ifconfig eth0 down
/sbin/service NetworkManager stop
export TRAFFIC_MASK=0x7
echo $TRAFFIC_MASK > /sys/class/net/eth0/device/libertas_rtap
ifconfig rtap0 up
 ;;
d|-d)
ifconfig rtap0 down
export TRAFFIC_MASK=0x0
echo $TRAFFIC_MASK > /sys/class/net/eth0/device/libertas_rtap
/sbin/service NetworkManager start
ifconfig msh0 up
ifconfig eth0 up
 ;;
*)
echo "USAGE: sh capture.sh e|d"
 ;;
esac