When I ping a computer that exists and get a reply, both the request and reply will be shown in Wireshark (I have put icmp as filter).
However if I ping a computer that does not exist the request will not be shown. Obviously there will be no reply but how come the request is not shown?
Edit: Also, if I ping my own IP I will get a reply but no message in Wireshark.
I ping via a direct IP-address, not a hostname. I.e. "ping XXX.XXX.XXX.XXX"