some IAPP implementations still use the pre-standard port 2313 in broadcast

mode (tested with the HP ProCurve 420wl). add a note to the manual page and
the example configuration.

src/etc/hostapd.conf

@@ -1,4 +1,4 @@
-# $OpenBSD: hostapd.conf,v 1.8 2005/11/03 23:06:48 david Exp $
+# $OpenBSD: hostapd.conf,v 1.9 2006/03/10 18:10:16 reyk Exp $
 # sample hostapd configuration file
 # see hostapd.conf(5)
 
@@ -41,6 +41,9 @@ set hostap mode radiotap
 set iapp interface $wired
 set iapp mode multicast
 
+# The following mode is compatible to some pre-standard IAPP implementations
+#set iapp mode broadcast port 2313
+
 #
 # Event rules
 #