On Jun 24, 2010, at 4:48 PM, Mark Andrews wrote: > The third choice is to do a non-blocking connect to IPv6 then if that does > not succeed in 1 or 2 seconds (most successful connects are within this > peroid but connect failures are considerably longer) initiate a non blocking > IPv4 connection and keep whichever completes first and abort the other. That sounds like a variation of the v6-then-v4 serial case, just slightly accelerated. But maybe I'm missing something... Regards, -drc _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf