if [ -x /etc/ppp/ip-up.d/$6 ]; then
	. /etc/ppp/ip-up.d/$6 "$@"
elif [ -n "$DNS1$DNS2" ]; then
	rm -f /etc/ppp/resolv.prev
	[ -s /etc/resolv.conf ] && mv -f /etc/resolv.conf /etc/ppp/resolv.prev
	[ -n "$DNS1" ] && echo "nameserver $DNS1" >> /etc/resolv.conf
	[ -n "$DNS2" ] && echo "nameserver $DNS2" >> /etc/resolv.conf
	chmod 644 /etc/resolv.conf
fi
