I have A computer. A, A run on A receiving procedures, still running A virtual machine, on A virtual machine is running A program,

Have the BC two PCS at the same time, each running a accept program,

Three computer connected with a router,

I respectively on BC two computers with the router to send packets, A virtual machine, B, C can be received, only A not receive, why?

I use A sends packets, all of them are not receive, use wireshark to see at the same time, data packets and no card