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Editing File: /usr/lib64/pm-utils/sleep.d/55NetworkManager

#!/bin/sh
# If we are running NetworkManager, tell it we are going to sleep.
# TODO: Make NetworkManager smarter about how to handle sleep/resume
#       If we are asleep for less time than it takes for TCP to reset a
#       connection, and we are assigned the same IP on resume, we should
#       not break established connections.  Apple can do this, and it is
#       rather nifty.

. "${PM_FUNCTIONS}"

suspend_nm()
{
	# Tell NetworkManager to shut down networking
        printf "Having NetworkManager put all interfaces to sleep..."
	dbus_send --system                         \
		--dest=org.freedesktop.NetworkManager  \
		/org/freedesktop/NetworkManager        \
		org.freedesktop.NetworkManager.Sleep boolean:true && \
	    echo Done. || echo Failed.
}

resume_nm()
{
	# Wake up NetworkManager and make it do a new connection
	printf "Having NetworkManager wake interfaces back up..."
        dbus_send --system                        \
		--dest=org.freedesktop.NetworkManager \
		/org/freedesktop/NetworkManager       \
		org.freedesktop.NetworkManager.Sleep boolean:false && \
	    echo Done. || echo Failed.
}

case "$1" in
	hibernate|suspend)
		suspend_nm
		;;
	thaw|resume)
		resume_nm
		;;
	*) exit $NA
		;;
esac

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