if { [ "$1" = "configure" ] || [ "$1" = "upgrade" ]; } && [ -e "${DPKG_ROOT}/etc/nsswitch.conf" ] ; then
	if ! grep -q -E '^#DB#:' "${DPKG_ROOT}/etc/nsswitch.conf" ; then
		echo "#DB#: " >> "${DPKG_ROOT}/etc/nsswitch.conf"
	fi
fi
