diff --git a/board/common/rootfs/etc/network/ifupdown2/policy.d/mgmt.json b/board/common/rootfs/etc/network/ifupdown2/policy.d/mgmt.json
new file mode 100644
index 00000000..0fc3961f
--- /dev/null
+++ b/board/common/rootfs/etc/network/ifupdown2/policy.d/mgmt.json
@@ -0,0 +1,6 @@
+{
+    "README": "Default mgmt interface prefix is 'eth'",
+    "main": {
+	"module_globals": { "mgmt_intf_prefix": "mgmt" }
+    }
+}