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#!/bin/sh
# Set an interface as managed / unmanaged by Network Manager
# 2013 Laurent Ghigonis <laurent@gouloum.fr>
# /etc/NetworkManager/NetworkManager.conf
# [keyfile]
# unmanaged-devices=mac:00:22:68:1c:59:b1;mac:00:1E:65:30:D1:C4
NMCONF=/etc/NetworkManager/NetworkManager.conf
progname=`basename $0`
usage_exit() {
echo "usage: $progname <action> <interface>"
echo
echo "actions:"
echo "status # Default action"
echo "manage <interface>"
echo "unmanage <interface>"
echo "restart"
exit 1
}
iface_status() {
iface=$2
mac=`ifconfig -a |grep -A5 $iface |grep ether |head -n1 |awk '{print $2}'`
echo "Corresponding MAC : $mac"
[[ $mac = "" ]] && echo "empty MAC !" && exit 1
grep "mac:$mac" $NMCONF >/dev/null
unmanaged=$?
}
[ X"$1" = X"-h" ] && usage_exit
action=$1
case $action in
m|manage)
iface_status $@
[[ $unmanaged -ne 0 ]] && echo "Already managed" && exit 1
sudo sed -i s/"mac:fe:ff:ff:ff:ff:ff"// $NMCONF
;;
u|unmanage)
iface_status $@
[[ $unmanaged -eq 0 ]] && echo "Already unmanaged" && exit 1
sudo sed -i s/"\(unmanaged-devices=\)"/"\1mac:$mac;"/ $NMCONF
;;
r|restart)
# done below
;;
*)
echo $NMCONF
cat $NMCONF
exit 1
esac
sudo systemctl restart NetworkManager.service
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