This file is indexed.

/etc/NetworkManager/dispatcher.d/ntp is in ntpsec 1.1.0+dfsg1-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

old_ntp_servers="unknown and invalid"
new_ntp_servers=$DHCP4_NTP_SERVERS
case "$2" in
	up|vpn-up) reason=BOUND; ;;
	down|vpn-down) reason=RELEASE; ;;
	*) exit 0; ;;
esac

test -f /etc/dhcp/dhclient-exit-hooks.d/ntp || exit 0
. /etc/dhcp/dhclient-exit-hooks.d/ntp