twice as many RRs in 9.20?

Ben Scott bscott at isc.org
Wed Dec 3 14:50:12 UTC 2025


On 12/3/25 06:43, Peter 'PMc' Much wrote:
> At 17:00 yesterday I changed from BIND 9.18 to 9.20.

   9.18.what to 9.20.what?

> Now I counted the RRs processed for a specific activity ...

   It's not clear to me exactly what you're measuring here (incoming RRs 
passing over the wire in the process of answering a given set of 
queries?), but I'd hazard a guess that you upgraded from <= 9.18.39 to 
 >= 9.20.15 and are now seeing the additional work BIND puts in to 
compensate for CVE-2025-40778.

   -- Ben

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