make this a reasonable default; don't listen anywhere and sync to

pool.ntp.org. Give some commented out examples tho.

src/etc/ntpd.conf

@@ -1,9 +1,12 @@
-# $OpenBSD: ntpd.conf,v 1.2 2004/07/07 04:01:47 henning Exp $
+# $OpenBSD: ntpd.conf,v 1.3 2004/07/07 05:56:01 henning Exp $
 # sample ntpd configuration file
 # see ntpd.conf(5)
 
-listen on 127.0.0.1
-listen on ::1
+# Adresses to listen on
+# ntpd does not listen on any address by default
+# listen on 127.0.0.1
+# listen on ::1
+# listen on *
 
 # remote servers to synchronize to
 # server 10.0.0.1