[dns-operations] Comparing TCP and UDP response times of root name servers

Paul Vixie paul at redbarn.org
Wed Nov 21 01:35:38 UTC 2012

On 2012-11-21 1:06 AM, John Kristoff wrote:
> Any ideas on when we might expect to see some
> DNS implementations support DNS over DCCP, if ever?  It might be quite
> handy in lieu of the ongoing DoS nuisance.  If not, why not?  Technical
> barriers, funding issues or lack of demand perhaps?

i think, never.

we're more likely to see TCPCT (see RFC 6013) or SCTP (see RFC 2960) if
we believe that the lightweight session framework we need for DNS is at
ISO L4, or eastlake cookies (see
http://tools.ietf.org/html/draft-eastlake-dnsext-cookies-03) if we think
it's going to be at ISO L5.


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