Hi, I´m working in a briding enviroment and i want to be sure that my arp requests outgoing a bridge interface will be hear by only one specific device (because of security reason) are there any way to re-write the ff:ff:ff:ff:ff:ff on this arp request so they appears like a unicast? Do de ip stack understand this "unicast" arp request? Thanks in advance for your help Victor __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more http://tax.yahoo.com