diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraCt.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraCt.java
index 73f37c8..19b30db 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraCt.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/NiciraCt.java
@@ -19,6 +19,7 @@
 import com.google.common.base.MoreObjects;
 import com.google.common.collect.Maps;
 import org.onlab.util.KryoNamespace;
+import org.onosproject.driver.extensions.serializers.NiciraNatSerializer;
 import org.onosproject.net.flow.AbstractExtension;
 import org.onosproject.net.flow.instructions.ExtensionTreatment;
 import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
@@ -44,6 +45,8 @@
                                                 .register(HashMap.class)
                                                 .register(ArrayList.class)
                                                 .register(ExtensionTreatment.class)
+                                                .register(new NiciraNatSerializer(),
+                                                              NiciraNat.class)
                                                 .build();
 
     /**
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/NiciraNatSerializer.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/NiciraNatSerializer.java
new file mode 100644
index 0000000..58340c2
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/NiciraNatSerializer.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.driver.extensions.serializers;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import org.onlab.packet.IpAddress;
+import org.onosproject.driver.extensions.NiciraNat;
+
+/**
+ * Kryo serializer for {@link NiciraNat}.
+ */
+public class NiciraNatSerializer extends Serializer<NiciraNat> {
+
+    /**
+     * Creates {@link NiciraNat} serializer instance.
+     */
+    public NiciraNatSerializer() {
+        // non-null, immutable
+        super(false, true);
+    }
+
+    @Override
+    public void write(Kryo kryo, Output output, NiciraNat object) {
+        output.writeInt(object.niciraNatFlags());
+        output.writeInt(object.niciraNatPresentFlags());
+        output.writeInt(object.niciraNatPortMin());
+        output.writeInt(object.niciraNatPortMax());
+
+        output.writeBytes(object.niciraNatIpAddressMin().toOctets());
+        output.writeBytes(object.niciraNatIpAddressMax().toOctets());
+    }
+
+    @Override
+    public NiciraNat read(Kryo kryo, Input input, Class<NiciraNat> type) {
+        int natFlags = input.readInt();
+        int natPresentFlags = input.readInt();
+        int natPortMin = input.readInt();
+        int natPortMax = input.readInt();
+
+        // TODO: IPv6 address should also be supported
+        byte[] minOcts = new byte[4];
+        byte[] maxOcts = new byte[4];
+
+        input.readBytes(minOcts);
+        input.readBytes(maxOcts);
+
+        IpAddress natIpAddressMin = IpAddress.valueOf(IpAddress.Version.INET, minOcts);
+        IpAddress natIpAddressMax = IpAddress.valueOf(IpAddress.Version.INET, maxOcts);
+
+        return new NiciraNat(natFlags, natPresentFlags, natPortMin, natPortMax,
+                natIpAddressMin, natIpAddressMax);
+    }
+}
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/package-info.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/package-info.java
new file mode 100644
index 0000000..39d1386
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/serializers/package-info.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Implementations of the serializer for NICIRA and OFDPA extensions.
+ */
+package org.onosproject.driver.extensions.serializers;