* @return {@code true} if the argument is a 6to4 address
   */
  public static boolean is6to4Address(Inet6Address ip) {
    byte[] bytes = ip.getAddress();
    return (bytes[0] == (byte) 0x20) && (bytes[1] == (byte) 0x02);
  }

  /**
   * Returns the IPv4 address embedded in a 6to4 address.
   *
   * @param ip {@link Inet6Address} to be examined for embedded IPv4 in 6to4 address

        this.name = new String("\\PIPE\\LANMAN");
        this.maxParameterCount = 8;

        // maxDataCount = 4096; why was this set?
        this.maxSetupCount = (byte) 0x00;
        this.setupCount = 0;
        this.timeout = 5000;
    }


    @Override
    protected int writeSetupWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    @Override

	if err != nil {
		return
	}
	err = en.WriteTime(z.Started)
	if err != nil {
		err = msgp.WrapError(err, "Started")
		return
	}
	// write "Replicate"
	err = en.Append(0xa9, 0x52, 0x65, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x65)
	if err != nil {
		return
	}
	if z.Replicate == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = z.Replicate.EncodeMsg(en)

    public static final int ACT_ERR = 0x6;
    public static final int CFT_ERR = 0x7;

    // session service error codes
    public static final int CONNECTION_REFUSED = -1;
    public static final int NOT_LISTENING_CALLED = 0x80;
    public static final int NOT_LISTENING_CALLING = 0x81;
    public static final int CALLED_NOT_PRESENT = 0x82;
    public static final int NO_RESOURCES = 0x83;
    public static final int UNSPECIFIED = 0x8F;

        this.maxSetupCount = 0;
    }


    @Override
    protected int writeSetupWireFormat ( byte[] dst, int dstIndex ) {
        dst[ dstIndex++ ] = this.getSubCommand();
        dst[ dstIndex++ ] = (byte) 0x00;
        return 2;
    }


    @Override
    protected int writeParametersWireFormat ( byte[] dst, int dstIndex ) {
        int start = dstIndex;

	if err != nil {
		return
	}
	err = en.WriteInt(z.SetIndex)
	if err != nil {
		err = msgp.WrapError(err, "SetIndex")
		return
	}
	// write "PoolIndex"
	err = en.Append(0xa9, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x64, 0x65, 0x78)
	if err != nil {
		return
	}
	err = en.WriteInt(z.PoolIndex)
	if err != nil {
		err = msgp.WrapError(err, "PoolIndex")
		return
	}
	// write "Queued"

        }

        off -= 4;

        b[off + 0] = (byte)SessionServicePacket.SESSION_MESSAGE;
        b[off + 1] = (byte)0x00; 
        b[off + 2] = (byte)(( len >> 8 ) & 0xFF ); 
        b[off + 3] = (byte)( len & 0xFF ); 

        out.write( b, off, 4 + len );
    }

			[in,out] int *level,
			[in,out,switch_is(*level)] ShareCtr *info,
			[in] unsigned long prefmaxlen,
			[out] unsigned long *totalentries,
			[in,out] unsigned long *resume_handle);

	[op(0x10)]
	int ShareGetInfo([in,string,unique] wchar_t *servername,
			[in,string] wchar_t *sharename,
			[in] int level,
			[out,switch_is(level)] ShareInfo *info);

	typedef struct {
		unsigned long platform_id;

		unicode_string name;
		uint32_t sid_index;
	} LsarTranslatedName;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTranslatedName *names;
	} LsarTransNameArray;

	[op(0x00)]
	int LsarClose([in,out] policy_handle *handle);

	[op(0x07)]
	int LsarQueryInformationPolicy([in] policy_handle *handle,
			[in] uint16_t level,
			[out,switch_is(level),unique] LsarPolicyInfo *info);

		unicode_string name;
		uint32_t sid_index;
	} LsarTranslatedName;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTranslatedName *names;
	} LsarTransNameArray;

	[op(0x00)]
	int LsarClose([in,out] policy_handle *handle);

	[op(0x07)]
	int LsarQueryInformationPolicy([in] policy_handle *handle,
			[in] uint16_t level,
			[out,switch_is(level),unique] LsarPolicyInfo *info);