diff --git a/ryu/lib/netconf/xml.xsd b/ryu/lib/netconf/xml.xsd
new file mode 100644
index 00000000..6234d2ef
--- /dev/null
+++ b/ryu/lib/netconf/xml.xsd
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns="http://www.w3.org/1999/xhtml"
+           xml:lang="en">
+ <xs:attribute name="lang">
+  <xs:simpleType>
+   <xs:union memberTypes="xs:language">
+    <xs:simpleType>
+     <xs:restriction base="xs:string">
+      <xs:enumeration value=""/>
+     </xs:restriction>
+    </xs:simpleType>
+   </xs:union>
+  </xs:simpleType>
+ </xs:attribute>
+ <xs:attribute name="space">
+  <xs:simpleType>
+   <xs:restriction base="xs:NCName">
+    <xs:enumeration value="default"/>
+    <xs:enumeration value="preserve"/>
+   </xs:restriction>
+  </xs:simpleType>
+ </xs:attribute>
+ <xs:attribute name="base"
+               type="xs:anyURI"/>
+ <xs:attribute name="id"
+               type="xs:ID"/>
+</xs:schema>