Localhost地址在其上下文中无效？

如何解决Localhost地址在其上下文中无效？

我正在连接到多播服务器（在我自己的计算机上）以接收一些流数据。我声明：

# Change this value to the IP address of the NatNet server.
self.serverIPAddress = "127.0.0.1"

# Change this value to the IP address of your local network interface
self.localIPAddress = "127.0.0.1"

# This should match the multicast address listed in Motive's streaming settings.
self.multicastAddress = "127.0.0.1"

    # Create a data socket to attach to the NatNet stream
    def __createDataSocket( self,port ):
        result = socket.socket( socket.AF_INET,# Internet
                              socket.soCK_DGRAM,socket.IPPROTO_UDP)    # UDP

        result.setsockopt(socket.soL_SOCKET,socket.so_REUSEADDR,1)
        result.setsockopt(socket.IPPROTO_IP,socket.IP_ADD_MEMBERSHIP,socket.inet_aton(self.multicastAddress) + socket.inet_aton(self.localIPAddress))

        result.bind( (self.localIPAddress,port) )

        return result

但要排队

result.setsockopt(socket.IPPROTO_IP,socket.inet_aton(self.multicastAddress) + socket.inet_aton(self.localIPAddress))

我不断收到错误消息：

OSError: [WinError 10049] The requested address is not valid in its context

我不明白为什么在使用本地主机（127.0.0.1）时会发生这种情况，有人可以解释吗？