[Opendnssec-develop] Missing TTLs in zone files

Alexd at nominet.org.uk Alexd at nominet.org.uk
Mon Oct 19 09:48:36 UTC 2009

Hi - 

I have been sent a few zone files where the problem seems to be a missing 
TTL. No TTLs are defined in RRs, and the $TTL directive is missing.

The signer seems to deal with this by assigning the SOA RR a TTL of 0, and 
assigning a TTL of 3600 (which is from the SOA Minimum field) to the 
remaining RRs.

Is this the correct behaviour? Should the auditor also do this?

We had thought that maybe *all* of the RRs should take the default of the 
SOA Minimum? (i.e. the SOA RR, and all other RRs)


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