Public Workshop: Resolvers Track
- Duane Wessels ()
Matt Larson (Dyn, Inc.)
As a byproduct of our web-based Real User Monitoring (RUM) agent, Dyn obtains the IP addresses of individual hosts running web browsers all over the world as well as the IP addresses of the recursive servers queried by those hosts. We have analyzed a rich data set of over 110 million client IP address-to-recursive IP address mappings to research an area of DNS that we believe has not been...
Brian Hartvigsen (OpenDNS)
Client Subnet offers the ability to offer better geolocation of end-users via DNS responses. This talk will concentrate on what happens when Client Subnet is enabled on a public resolver. It will look at upstream traffic patterns, cache performance, and other factors that come into play with Client Subnet. At the end of this talk, DNS providers should have a better idea of how Client Subnet...
Robert Edmonds (Farsight Security, Inc.)
A few existing "whoami" or "dnsecho" authoritative DNS services allow for limited extraction of information about the resolver to the original client that would normally be hidden. For example, querying an anycasted resolver like 22.214.171.124 with the command "dig @126.96.36.199 whoami.akamai.net" will return an address record revealing a unicast initiator address used by the anycast service. This is...
Mr. Geoff Huston (APNIC)
Much work has been undertaken in the browser world to produce the so-called "Happy Eyeballs" outcome. This is an outcome where the client will detect if the service is a dual stack service and if so then use a connection process that slightly biases the client in favour of using IPv6 as the transport for the DNS. What evidence is there for a similar mode of behaviour of DNS resolvers? This...