[dns-operations] compressing DNS traffic data

[Ray Bellis]

On 9 Dec 2010, at 10:06, Jim Reid wrote:

> Fair enough Ray. But the idea of "uninteresting" data is troubling too. If such data exists, it means there's excessive or redundant data in the DNS protocol. That seems unlikely. Even if the protocol suffers from excessive or redundant data, who's to say that what we consider "uninteresting" today becomes important tomorrow?

There's data in the protocol which is not redundant in the individual packets, but is redundant when looking at a query/response pair because it's duplicated, e.g. the QID and question section in the response.

> Some things like the source port number or query ID or QCLASS might appear to be attractive targets that could be discarded. I disagree.

So do I :)

Ray

-- 
Ray Bellis, MA(Oxon) MIET
Senior Researcher, Nominet
e: ray at nominet.org.uk, t: +44 1865 332211