On Wed, Nov 19, 2014 at 12:13 PM, Paul Hoffman <[email protected]> wrote: > Given that the problem statement for the group is stub-to-resolver, and a > stub generally uses one resolver, it is quite believable that one would have > a TCP connection open to the resolver that is reused for future DNS queries. > After the initial TCP connection to the resolver (which is normally done > before the first web page request), the speed of the request is the same for > an open TCP connection as it is for a new UDP "connection".
That becomes very problematic when running a big public DNS server. Basically it would require every client to keep a TCP connection open permanently. That is a huge load. I have 40 computers with IP in this house that are used regularly. My network traces are clogged enough without TCP keepalive packets. _______________________________________________ dns-privacy mailing list [email protected] https://www.ietf.org/mailman/listinfo/dns-privacy
