I think we will never move to IPv6 if vendors don't do thingslike the one in the Airport. However, in order to make this"transition" phase where there may be a possible degradationof the RTT, we need to cooperation of the operators, forexample deploying 6to4 relays in their networks.And just what should operators do to cooperate?Are you aware of any documents that describe how to set up 6to4 relaysin an ISP network?