fixing dhcp serialization problem

Change-Id: Ie049f9c1e464ca9a2b651df74f7b979628d0d745

@@ -104,7 +104,7 @@ public final class DefaultOpenFlowPacketContext implements OpenFlowPacketContext
         } catch (BufferUnderflowException | NullPointerException |
                 DeserializationException e) {
             Logger log = LoggerFactory.getLogger(getClass());
-            log.warn("packet deserialization problem");
+            log.warn("packet deserialization problem : {}", e.getMessage());
             return null;
         }
     }

@@ -628,6 +628,9 @@ public class DHCP extends BasePacket {
                         }
                     }
                 } else if (code == 255) {
+                    DHCPOption end = new DHCPOption();
+                    end.setCode((byte) 255);
+                    dhcp.options.add(end);
                     // remaining bytes are supposed to be 0, but ignore them just in
                     // case
                     foundEndOptionsMarker = true;

@@ -271,7 +271,8 @@ public class IGMP extends BasePacket {
                     break;
 
                 default:
-                    msg = "IGMP message type: " + igmp.igmpType + " is not recodnized";
+                    msg = "IGMP message type: " + igmp.igmpType + " is not recognized";
+                    igmp.unsupportTypeData = bb.array();
                     igmp.log.debug(msg);
                     break;
             }

@@ -130,7 +130,7 @@ public class DhcpTest {
 
         assertEquals(serverName, dhcp.serverName);
         assertEquals(bootFileName, dhcp.bootFileName);
-        assertEquals(1, dhcp.options.size());
+        assertEquals(2, dhcp.options.size());
         assertEquals(hostNameOption, dhcp.options.get(0));
     }