Martin, On Jun 17, 2010, at 1:24 PM, Martin Rex wrote: > I don't know what the broadbands for the average home users look > like where you are, but here they're typically <= 640kBit/s upstream. And? How much bandwidth does a parallel connection use up? Presumably if this felt to be a problem, kernels could cache what works and what doesn't. >> much less anywhere near "close to a Denial of Service (DoS) attack". > > If you look at hostnames such as hp.com which have 13 IPv4 listed in > the DNS, it would probably have a significant effect on their > infrastructure if suddenly every client would attempt 13 parallel > TCP-connects and kill 12 of them pre-natal or during infancy. I'd be surprised, as them even noticing would tend to indicate they'd be trivially susceptible to D(D)oS attacks. However, I thought we were talking about doing parallel lookups/connects to an IPv6 address at the same time an IPv4 lookup/connect was done. Don't see any particular point in opening parallel lookups to multiple IPv4 (or IPv6) addresses. Regards, -drc _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf