Re:A guide to writing a DNS Server from scratch in Rust
by SoylentBob on Sunday June 07, 2020 @03:04AM
(#23445383)
Having multiple TTLs in the same record set is deprecated. [1]
If you would rather put them in your cache, instead of not allowing to request them through your server, you are probably best off, by taking the lower TTL and using that as your initial TTL. E.g. this is how an authoritative Knot instance would handle differing TTLs in a DNSSEC signed zone.
If you would rather put them in your cache, instead of not allowing to request them through your server, you are probably best off, by taking the lower TTL and using that as your initial TTL. E.g. this is how an authoritative Knot instance would handle differing TTLs in a DNSSEC signed zone.
[1] https://tools.ietf.org/html/rfc2181#section-5.2