Ping() doesn't send packet?

[MrBeatnik]

I have a rather strange issue on some machines.

If I attempt to use the inbuilt PING function, no ICMP packet is sent out.

 

Ping("internal.fqdn.com")

is returning "Host Unreachable"

If I ping using the command prompt, it's all fine.

 

Using wireshark I can see that it hasn't even attempted an ICMP request. I can see it has looked up DNS to check for the correct IP address (I can see reply packet returns 10 different IP address as round robin - which is expected), but then it simply doesn't send the request.

 

Any ideas?

[computergroove]

ShellExecute("ping.exe","www.google.com")