DNS
RFC8806 introduced the concept of hyperlocal roots where resolving servers hold a copy of the root zone. This improves the overall stability and resilience of the Root Server System (RSS). The aim of draft-wkumari-dnsop-localroot-bcp is to develop RFC8806 into a Best Common Practice and encourage wider adoption. The I-D is expected to be discussed in the dnsop WG at IETF124.
We have conducted a multi year study on RRSIG lifetimes for all Top Level Domains. This presentation will take a closer look on the interplay of RRSIG Lifetime and SOA Expire values. We will look at RFC recommendations and at different TLD's and their practices.
Take-away from this study are relevant not only for TLD operators, but for any operator of DNSSEC signed zones.
I would tell a story how we (Hostmaster.UA) have switched from regular zone transfers to XoT and what lessons we have learned.
I recently ran a measurement of what the upper TTL caps are on resolvers used by RIPE Atlas probes. This talk gives the motivation of the measurement, some the results, and some analysis.