check for the -w flag for ping6 as well as ping

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1165 f882894a-f735-0410-b71e-b25c423dba1c

configure.in

@@ -957,6 +957,14 @@ elif test "x$PATH_TO_PING6" != "x"; then
 		ac_cv_ping6_packets_first=yes
 		AC_MSG_RESULT([$with_ping6_command])
 
+	elif $PATH_TO_PING6 -n -U -w 10 -c 1 ::1 2>/dev/null | \
+		egrep -i "^round-trip|^rtt" >/dev/null
+	then
+		with_ping6_command="$PATH_TO_PING6 -n -U -w %d -c %d %s"
+		ac_cv_ping6_packets_first=yes
+		ac_cv_ping_has_timeout=yes
+		AC_MSG_RESULT([$with_ping6_command])
+
 	elif $PATH_TO_PING6 -n -U -c 1 ::1 2>/dev/null | \
 		egrep -i "^round-trip|^rtt" >/dev/null
 	then