>>>>> "M" == Martin Farnik <martin.farnik / email.cz> writes:

M> I get 
M> ../ethtest.rb:28:in `send': Permission denied - "sendto(2)" (Errno::EACCES)
M>         from ./ethtest.rb:28

 You must call #setsockopt to specify the option Socket::SO_BROADCAST,
 before calling #send


Guy Decoux