There is any way to specify the aditional informations in the ICMP reject package.(patch or somthing ?) For example i whant to reject a package with ICMP type 5 , Redirect message and i whant to set the Router flag (the new gateway). BTW: Anybody know is windows is working according with the RFC and is realy " revise its routing table " ? 10x Alex __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs