/usr/lib/pm-utils/power.d/disable_wol is in pm-utils 1.4.1-9.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #!/bin/sh
. "${PM_FUNCTIONS}"
command_exists ethtool || exit $NA
set_wol_status() {
    for d in "/sys/class/net/"*; do
	[ -e "$d/wireless" ] && continue
	[ -h "$d/device/driver" ] || continue
	printf "Setting Wake On Lan for %s to %s..." "${d##*/}" "$1"
	case $1 in
	    disable) ethtool -s "${d##*/}" wol d>/dev/null 2>&1;;
	    enable) ethtool -s "${d##*/}" wol g>/dev/null 2>&1;;
	esac
	[ "$?" -eq 0 ] && echo Done. || echo Failed.
    done
}
case $1 in
    true) set_wol_status disable;;
    false) set_wol_status enable;;
    *) exit $NA;;
esac
exit 0
 |