1 files changed, 16 insertions, 0 deletions
diff --git a/nova/utils.py b/nova/utils.py
index f6e98c2eb..fc4bbd53b 100644
--- a/nova/utils.py
+++ b/nova/utils.py
@@ -844,3 +844,19 @@ def bool_from_str(val):
         return True if int(val) else False
     except ValueError:
         return val.lower() == 'true'
+
+
+def is_valid_ipv4(address):
+    """valid the address strictly as per format xxx.xxx.xxx.xxx.
+    where xxx is a value between 0 and 255.
+    """
+    parts = address.split(".")
+    if len(parts) != 4:
+        return False
+    for item in parts:
+        try:
+            if not 0 <= int(item) <= 255:
+                return False
+        except ValueError:
+            return False
+    return True