On Mon, Jun 22, 2020 at 09:57:13AM +0000, Bill Pye via Pdns-users wrote:

> Hi all 
> 
> I'm a home user of your excellent software and by no means an expert in DNS. 
> A while ago I was experimenting with setting-up rpz files on my DNS servers, 
> that all worked OK. Recently I've been trying to configure the rpz via AXFR 
> from ioc2rpz here: [ https://ioc2rpz.net/ | https://ioc2rpz.net/ ] 
> 
> After a bit of trial and error (normal for me!) I have this working quite 
> well but I did hit a 'problem' and have a couple of questions. 
> 
> While reading the documentation of the feed it mentioned that the feeds were 
> updated every thirty minutes, PDNS-recursor documentation states that the 
> zones default is used if not specified in the config file: 
> 
> "refresh 
> 
> 
> 
> An integer describing the interval between checks for updates. By default, 
> the RPZ zone’s default is used" 
> 
> 
> 
> 
> That sounded reasonable so I left that alone and started with one feed which 
> contained four records. Strangely that resulted in an IXFR being done every 
> second, I left that running for a while (i.e. for about 12 hours) and it 
> never stopped. Is this a bug and should I file one on github? 
> 
> 
> 
> 
> 
> Next a question, the documentation states the Refresh is an "integer" but it 
> doesn't mention that it's a per-second "integer" - should that be added to 
> the documentation? . Could the fact that if it's left empty be responsible 
> for my once-per-second IXFR? As the feed said it was updated every thirty 
> minutes override that once-per-second? 
> 
> The relevant SOA record from my feed is this: 
> 
> dns-bh.ioc2rpz. 604800 IN SOA ioc2rpz-srv1.ioc2rpz.net. ioc2rpz.ioc2rpz.com. 
> 1591664280 43200 900 2592000 7200 
> 
> Obviously that has a refresh of 15 minutes which is not the 30 mins the 
> document says but should my once-per-second IXFR be happening with that SOA? 
> Once I added a refresh to my rpzmaster entry it all worked as expected. :) 
> 
> I hope that all makes sense but if I've missed something or it isn't too 
> clear then just let me know. 
> 
> Regards 
> 
> 
> Bill 

Please always tell which version you are using.

An issue that sounds very much lkike what you are seeing was fixed in
https://github.com/PowerDNS/pdns/pull/8778. This is also in 4.3.1

For older versions, you should set a refresh interval explicitly.

As for the feed's data update interval vs their published refresh
interval in their SOA record, I think yo have to contact the feed source.

        -Otto
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