你好，我用iperf3和python -m SimpleHTTPServer绑定vpp接管的网卡 外部都能正常通信，但是用Java就不行，能请教下原因吗？vpp版本20.09操作系统Ubuntu18.04
报错原因：vcl_session_bound_handler:610: vcl<12705:0>: ERROR session 4 [0x0]: bind failed: invalid namespace
java.net.SocketException: Connection refused (Listen failed)
at java.net.PlainSocketImpl.socketListen(Native Method)
at java.net.AbstractPlainSocketImpl.listen(AbstractPlainSocketImpl.java:525)
at java.net.ServerSocket.bind(ServerSocket.java:376)
at java.net.ServerSocket.(ServerSocket.java:237)
at SocketTest.main(SocketTest.java:16)
vl_client_disconnect:323: queue drain: 551