--- embedaddon/mtr/packet/probe_cygwin.c 2021/03/17 00:07:30 1.1.1.2 +++ embedaddon/mtr/packet/probe_cygwin.c 2023/09/27 11:18:58 1.1.1.3 @@ -352,7 +352,7 @@ void icmp_send_probe( timeout = 1000 * request->timeout; } else { /* - IcmpSendEcho2 will return invalid argument on a timeout of + IcmpSendEcho2 will return invalid argument on a timeout of zero. Our Unix implementation allows it. Bump up the timeout to 1 millisecond. */