My thought right now is perhaps of an OS update that includes a background client which tries very hard to reduce the effect of breakage or delay caused by IPv6 routes that are dead, DNS queries that don't go anywhere, and delays caused by slow transition techniques. It couldn't be comprehensive, but I think it'd go a long way at this point. The software vendors could, for instance, provide the test sites that receive IPv6 probes and/or traffic, and respond to them. Not scalable? ... Cheers, Sabahattin _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf