Gorry: in your document http://www.erg.abdn.ac.uk/users/gorry/ip-dvb/ You say > Some missing functionality: e.g. arp, mcast, requiring additional > features to complete the system design. Could you please explain what you mean by this? Patrick. -- UDcast: Full IP over Broadcast Media Phone: (+33) (0)4 93 00 16 99 Mobile: (+33) (0)6 14 21 55 98 Fax: (+33) (0)4 93 00 16 61 http://www.UDcast.com