OK, so tried this on win10 and could not reproduce the behaviour you are seeing. The ping binary doesn't work properly on win10, though; could you try to see what happens if you run the tcp_1up_noping test? -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/tohojo/flent/issues/130#issuecomment-376539566