diff --git a/lib/bmc_network_utils.py b/lib/bmc_network_utils.py
new file mode 100644
index 0000000..530f80f
--- /dev/null
+++ b/lib/bmc_network_utils.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+r"""
+Network generic functions.
+
+"""
+
+import ipaddress
+from robot.libraries.BuiltIn import BuiltIn
+
+
+def netmask_prefix_length(netmask):
+    r"""
+    Return the netmask prefix length.
+
+    Description of argument(s):
+    netmask     Netmask value (e.g. "255.255.0.0", "255.255.255.0",
+                                    "255.252.0.0", etc.).
+    """
+
+    # IP address netmask format: '0.0.0.0/255.255.252.0'
+    return ipaddress.ip_network('0.0.0.0/' + netmask).prefixlen