
3/15/2019 · Marek Majkowski
What this post added
This post announces the publication of RFC8482, which deprecates the DNS ANY query type. It details the historical context, the challenges ANY posed for modern DNS servers (difficulty in retrieving 'all records' due to dynamic response generation), clients (unpredictable semantics), and network operators (amplification attacks). Cloudflare's proactive stance on deprecating ANY is highlighted, along with their implementation of responding with HINFO or NOTIMP codes. The post encourages other implementers to clean up their ANY handling code.