[CORD-1429] Add DHCPv6 packet serializer and deserializer

Change-Id: I06338590ccb6c0c3a5d56c89dd23d85646ea159b
diff --git a/utils/misc/src/main/java/org/onlab/packet/UDP.java b/utils/misc/src/main/java/org/onlab/packet/UDP.java
index edf99af..6849654 100644
--- a/utils/misc/src/main/java/org/onlab/packet/UDP.java
+++ b/utils/misc/src/main/java/org/onlab/packet/UDP.java
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-
-
 package org.onlab.packet;
 
 import java.nio.ByteBuffer;
@@ -32,12 +30,16 @@
 public class UDP extends BasePacket {
     public static final Map<Integer, Deserializer<? extends IPacket>> PORT_DESERIALIZER_MAP =
             ImmutableMap.<Integer, Deserializer<? extends IPacket>>builder()
-                .put(UDP.DHCP_SERVER_PORT, DHCP.deserializer())
-                .put(UDP.DHCP_CLIENT_PORT, DHCP.deserializer())
-                .build();
+                    .put(UDP.DHCP_SERVER_PORT, DHCP.deserializer())
+                    .put(UDP.DHCP_CLIENT_PORT, DHCP.deserializer())
+                    .put(UDP.DHCP_V6_SERVER_PORT, DHCP6.deserializer())
+                    .put(UDP.DHCP_V6_CLIENT_PORT, DHCP6.deserializer())
+                    .build();
 
     public static final int DHCP_SERVER_PORT = 67;
     public static final int DHCP_CLIENT_PORT = 68;
+    public static final int DHCP_V6_SERVER_PORT = 547;
+    public static final int DHCP_V6_CLIENT_PORT = 546;
 
     private static final short UDP_HEADER_LENGTH = 8;