diff --git a/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGetAvailable.json b/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGetAvailable.json
new file mode 100644
index 0000000..2dcb91d
--- /dev/null
+++ b/apps/dhcp/app/src/main/resources/definitions/DhcpConfigGetAvailable.json
@@ -0,0 +1,16 @@
+{
+  "type": "object",
+  "required": [
+    "availableIp"
+  ],
+  "properties": {
+    "availableIp": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      },
+      "example": "[127.0.0.1]"
+    }
+  }
+}
+