Bruce,

you should start by picking a policy for your serial number. Both unixtime and 
datetime are viable, but you should pick one.

Then rotate to your desired policy by doing the serial number arithmetic. For 
datetime, you would just bump it, but for unixtime you will need to do that in 
more steps (as you have found on the Internet).

Ondrej
--
Ondřej Surý — ISC (He/Him)

> On 17. 12. 2020, at 19:56, Bruce Johnson <john...@pharmacy.arizona.edu> wrote:
> 
> Someone updated out name server and messed up the serial number on the 
> primary; as a result our secondaries are not updating properly.
> 
> Primary:
> 
> bruces-Mac-Mini:~ johnson$ dig @elixir.pharmacy.arizona.edu -t SOA +noall 
> +answer pharmacy.arizona.edu
> pharmacy.arizona.edu.    86404    IN    SOA    elixir.pharmacy.arizona.edu. 
> wunz.elixir.pharmacy.arizona.edu. 1297117089 3600 120 1209600 86400
> 
> 
> Secondaries:
> 
> bruces-Mac-Mini:~ johnson$ dig @dhbns1.pharmacy.arizona.edu -t SOA +noall 
> +answer pharmacy.arizona.edu
> pharmacy.arizona.edu.    86404    IN    SOA    elixir.pharmacy.arizona.edu. 
> wunz.elixir.pharmacy.arizona.edu. 1762233707 3600 120 1209600 86400
> bruces-Mac-Mini:~ johnson$ dig @ns-remote.arizona.edu -t SOA +noall +answer 
> pharmacy.arizona.edu
> pharmacy.arizona.edu.    86404    IN    SOA    elixir.pharmacy.arizona.edu. 
> wunz.elixir.pharmacy.arizona.edu. 1762233707 3600 120 1209600 86400
> 
> Is the fix here just setting the serial number on the primary to 1762233708 ?
> 
> The various things online I’ve found are all based on “you accidentally set 
> the primary more than 2^32 ahead” so you have to do a bunch of modulo 
> arithmetic...
> 
> 
> -- 
> Bruce Johnson
> University of Arizona
> College of Pharmacy
> Information Technology Group
> 
> Institutions do not have opinions, merely customs
> 
> 
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