Changed nomenclature from Broker to Registry.
diff --git a/net/api/src/main/java/org/onlab/onos/net/link/LinkProviderRegistry.java b/net/api/src/main/java/org/onlab/onos/net/link/LinkProviderRegistry.java
new file mode 100644
index 0000000..2aa54e7
--- /dev/null
+++ b/net/api/src/main/java/org/onlab/onos/net/link/LinkProviderRegistry.java
@@ -0,0 +1,10 @@
+package org.onlab.onos.net.link;
+
+import org.onlab.onos.net.provider.ProviderRegistry;
+
+/**
+ * Abstraction of an infrastructure link provider registry.
+ */
+public interface LinkProviderRegistry
+ extends ProviderRegistry<LinkProvider, LinkProviderService> {
+}