$result = send( SOCKET, $synpacket, $num_of_bytes, $broadcastAddr );

perldoc -f send says

    send SOCKET,MSG,FLAGS,TO
    send SOCKET,MSG,FLAGS

[download]

so your invocation appears to be incorrect. Replacing $num_of_bytes with 0 gives me a successful outcome, although I did clean up your code a little before running so let us know if you still have problems.

In reply to Re: Can't send more than 12 bytes on raw socket! (not including IP header) by hippo
in thread Can't send more than 12 bytes on raw socket! (not including IP header) by BatchMcNulty

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