The IESG has approved the following document: - 'C-DNS: A DNS Packet Capture Format' (draft-ietf-dnsop-dns-capture-format-10.txt) as Proposed Standard This document is the product of the Domain Name System Operations Working Group. The IESG contact persons are Warren Kumari and Ignas Bagdonas. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-dnsop-dns-capture-format/ Technical Summary This document describes a data representation for collections of DNS messages. The format is designed for efficient storage and transmission of large packet captures of DNS traffic; it attempts to minimize the size of such packet capture files but retain the full DNS message contents along with the most useful transport metadata Working Group Summary There was no controversy with the working group. However, during an IETF Hackathon, several issues were during the proof of concept. The document was corrected to address these issues, and is a stronger document because of this. Document Quality There is an existing implementation, as well as converters from this format to other packet formats. From the document: ICANN/Sinodun IT have developed an open source implementation called DNS-STATS Compactor. The Compactor is a suite of tools which can capture DNS traffic (from either a network interface or a PCAP file) and store it in the Compacted-DNS (C-DNS) file format. PCAP files for the captured traffic can also be reconstructed. See Compactor [1]. This implementation: o covers the whole of the specification described in the -03 draft with the exception of support for malformed messages and pico second time resolution. (Note: this implementation does allow malformed messages to be recorded separately in a PCAP file). o is released under the Mozilla Public License Version 2.0. o has a users mailing list available, see dns-stats-users [2]. Personnel Document Shepherd: Tim Wicinski Responsible Area Director (RAD): Warren Kumari
