--- /dev/null
+# Half-Life 2 Deathmatch - popular computer game
+# Pattern quality: good veryfast
+# Protocol groups: proprietary game
+#
+# By Clayton Macleod <cherrytwist TA gmail.com>
+#
+# To get or provide more information about this protocol and/or pattern:
+# http://www.protocolinfo.org/wiki/Half-Life
+# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers
+
+halflife2-deathmatch
+^\xff\xff\xff\xff.*hl2mpDeathmatch