diff --git a/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java
new file mode 100644
index 0000000..e57a777
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java
@@ -0,0 +1,25 @@
+package net.onrc.onos.core.util.serializers;
+
+import java.io.IOException;
+
+import net.floodlightcontroller.util.MACAddress;
+
+import org.codehaus.jackson.JsonGenerator;
+import org.codehaus.jackson.JsonProcessingException;
+import org.codehaus.jackson.map.JsonSerializer;
+import org.codehaus.jackson.map.SerializerProvider;
+
+/**
+ * Serialize a MAC address as a string.
+ */
+public class MACAddressSerializer extends JsonSerializer<MACAddress> {
+
+    @Override
+    public void serialize(MACAddress mac, JsonGenerator jGen,
+			  SerializerProvider serializer)
+	throws IOException, JsonProcessingException {
+	jGen.writeStartObject();
+	jGen.writeStringField("value", mac.toString());
+	jGen.writeEndObject();
+    }
+}