title: Ping ICMP echo request
body: <p>Are there any methods to ping icmp (echo request) instead of using isReachable? isReachable establish a TCP connection on port 7 and when I used wireshark I did not see any ICMP packets on Window and ICMP type 3 on Linux (not type 8 and 0). So if someone have suggestions or solutions could you please tell me. Thanks a lot!</p>