diff --git a/mdx/common-beans.xml b/mdx/common-beans.xml
index 44e7a6db..dcf34790 100644
--- a/mdx/common-beans.xml
+++ b/mdx/common-beans.xml
@@ -209,6 +209,31 @@
         </property>
     </bean>
     
+    <!--
+        *************************************************
+        ***                                           ***
+        ***   M D R P I   S P E C I F I C A T I O N   ***
+        ***                                           ***
+        *************************************************
+    -->
+    
+    <!--
+        default_regauth_parent
+        
+        Parent (template) for per-channel beans.
+        
+        Any registrationAuthority already present on an entity in this
+        channel must match the known registration authority value.
+    -->
+    <bean id="default_regauth_parent" class="net.shibboleth.metadata.dom.XSLTransformationStage"
+        init-method="initialize" lazy-init="true" abstract="true">
+        <property name="xslResource">
+            <bean class="org.opensaml.util.resource.FilesystemResource">
+                <constructor-arg value="#{ systemProperties['basedir'] }/mdx/default_regauth.xsl"/>
+            </bean>
+        </property>
+    </bean>
+    
     <!--
         *********************
         ***               ***
diff --git a/mdx/default_regauth.xsl b/mdx/default_regauth.xsl
new file mode 100644
index 00000000..2ecea36c
--- /dev/null
+++ b/mdx/default_regauth.xsl
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+	default_regauth.xsl
+
+	Apply a default registrationAuthority to entities which don't have one already.
+	
+-->
+<xsl:stylesheet version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
+	xmlns:mdrpi="urn:oasis:names:tc:SAML:metadata:rpi"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns="urn:oasis:names:tc:SAML:2.0:metadata">
+
+	<!--
+        defaultAuthority
+        
+        Set this parameter from the calling context.
+    -->
+	<xsl:param name="defaultAuthority">(value not set)</xsl:param>
+	
+	<!--
+		EntityDescriptor with no Extensions doesn't have a RegistrationInfo,
+		by definition.
+	-->
+	<xsl:template match="md:EntityDescriptor[not(md:Extensions)]">
+		<xsl:copy>
+			<xsl:apply-templates select="@*"/>
+			<xsl:text>&#10;</xsl:text>
+			<xsl:text>    </xsl:text>
+			<xsl:element name="Extensions" namespace="urn:oasis:names:tc:SAML:2.0:metadata">
+				<xsl:call-template name="default_regauth"/>
+			</xsl:element>
+			<xsl:apply-templates select="node()"/>
+		</xsl:copy>
+	</xsl:template>
+	
+	<!--
+		EntityDescriptor with Extensions but without RegistrationInfo needs to have one
+		injected into the existing Extensions.
+	-->
+	<xsl:template match="md:EntityDescriptor/md:Extensions[not(mdrpi:RegistrationInfo)]">
+		<xsl:copy>
+			<xsl:call-template name="default_regauth"/>
+			<xsl:apply-templates select="node()"/>
+		</xsl:copy>
+	</xsl:template>
+	
+	<!--
+		Default RegistrationInfo element, with associated white space.
+	-->
+	<xsl:template name="default_regauth">
+		<xsl:text>&#10;</xsl:text>
+		<xsl:text>        </xsl:text>
+		<xsl:element name="mdrpi:RegistrationInfo">
+			<xsl:attribute name="registrationAuthority">
+				<xsl:value-of select="$defaultAuthority"/>
+			</xsl:attribute>
+		</xsl:element>
+		<xsl:text>&#10;</xsl:text>
+		<xsl:text>    </xsl:text>
+	</xsl:template>
+	
+	<!--By default, copy text blocks, comments and attributes unchanged.-->
+	<xsl:template match="text()|comment()|@*">
+		<xsl:copy/>
+	</xsl:template>
+	
+	<!--By default, copy all elements from the input to the output, along with their attributes and contents.-->
+	<xsl:template match="*">
+		<xsl:copy>
+			<xsl:apply-templates select="node()|@*"/>
+		</xsl:copy>
+	</xsl:template>
+		
+</xsl:stylesheet>
diff --git a/mdx/ie_edugate/beans.xml b/mdx/ie_edugate/beans.xml
index 2bf52839..dc402b16 100644
--- a/mdx/ie_edugate/beans.xml
+++ b/mdx/ie_edugate/beans.xml
@@ -99,6 +99,21 @@
         </property>
     </bean>
     
+    <!--
+        ie_edugate_default_regauth
+        
+        Provide a default registrationAuthority appropriate to
+        this channel.
+    -->
+    <bean id="ie_edugate_default_regauth"  parent="default_regauth_parent">
+        <property name="id" value="ie_edugate_default_regauth"/>
+        <property name="transformParameters">
+            <map>
+                <entry key="defaultAuthority" value-ref="ie_edugate_registrar"/>
+            </map>
+        </property>
+    </bean>
+    
     <!--
         Fetch and process all entities as a collection.
     -->
@@ -147,6 +162,7 @@
                 
                 <ref bean="disassemble"/>
                 
+                <ref bean="ie_edugate_default_regauth"/>
                 <ref bean="ie_edugate_check_regauth"/>
                 <ref bean="standardImportActions"/>
             </list>