diff --git a/python/samba/netcmd/domain.py b/python/samba/netcmd/domain.py
index f5f01411583..ef3d7c5a357 100644
--- a/python/samba/netcmd/domain.py
+++ b/python/samba/netcmd/domain.py
@@ -154,6 +154,23 @@ common_ntvfs_options = [
 ]
 
 
+def level_to_string(level):
+    """turn the level enum number into a printable string."""
+    if level < DS_DOMAIN_FUNCTION_2000:
+        return "invalid"
+    strings = {
+        DS_DOMAIN_FUNCTION_2000: "2000",
+        DS_DOMAIN_FUNCTION_2003_MIXED: \
+            "2003 with mixed domains/interim (NT4 DC support)",
+        DS_DOMAIN_FUNCTION_2003: "2003",
+        DS_DOMAIN_FUNCTION_2008: "2008",
+        DS_DOMAIN_FUNCTION_2008_R2: "2008 R2",
+        DS_DOMAIN_FUNCTION_2012: "2012",
+        DS_DOMAIN_FUNCTION_2012_R2: "2012 R2",
+    }
+    return strings.get(level, "higher than 2012 R2")
+
+
 def get_testparm_var(testparm, smbconf, varname):
     errfile = open(os.devnull, 'w')
     p = subprocess.Popen([testparm, '-s', '-l',