diff --git a/ofagent/loxi/of13/common.py b/ofagent/loxi/of13/common.py
index 4bf1750..eb95605 100644
--- a/ofagent/loxi/of13/common.py
+++ b/ofagent/loxi/of13/common.py
@@ -1947,6 +1947,21 @@
 
 hello_elem.subtypes[1] = hello_elem_versionbitmap
 
+class hello_elem_bitmap(loxi.OFObject):
+
+    def __init__(self, version_list=None):
+        if version_list != None:
+            self.version_list = version_list
+        else:
+            self.version_list = []
+        self.bitmap = 0
+        for version in version_list:
+            self.bitmap = self.bitmap | 1 << version
+        return
+
+    def pack(self):
+        return struct.pack("!L", self.bitmap)
+
 class match_v3(loxi.OFObject):
     type = 1