[Opendnssec-develop] Missing TTLs in zone files

[Rickard Bondesson]

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> How does negative caching algorithms treat an SOA with zero TTL?
> Doesn't it obsolete negative caching, since it needs the SOA for every
> negative response?

Yeah, SOA TTL = 0 means no negative caching.

RFC2308
3 - Negative Answers from Authoritative Servers
"The TTL of this record is set from the minimum of the MINIMUM field of the SOA record and the TTL of the SOA itself"

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