dns_diff_apply / "del not exact" logging

Wed Feb 14 07:41:23 UTC 2024

Hi,

since upgrading our secondary to 9.18.24 yesterday, I'm seeing the logging messages below.

14-Feb-2024 07:52:24.850 general: error: dns_diff_apply: wur1-ps003.ad01.geXXX/A/IN: del not exact
14-Feb-2024 07:53:28.732 general: error: dns_diff_apply: 1.0.e.4.1.1.0.0.2.ip6.arpa/SOA/IN: del not exact
14-Feb-2024 07:54:03.827 general: error: dns_diff_apply: ad01.idkXXX/RRSIG/IN: del not exact
14-Feb-2024 08:05:18.363 general: error: dns_diff_apply: HRO1-NB041.ad01.geXXX/A/IN: del not exact
14-Feb-2024 08:07:25.346 general: error: dns_diff_apply: lc7a5c2o2ur6umdqkvijckprpj74g6qr.ad01.idXXX/RRSIG/IN: del not exact
14-Feb-2024 08:17:58.873 general: error: dns_diff_apply: HRO1-NB002.ad01.geXXX/A/IN: del not exact
14-Feb-2024 08:18:34.160 general: error: dns_diff_apply: FUS1-MPC120.ad01.chXXX/A/IN: del not exact

The zone names mentioned are anonymized by me. primary of each zone is some kind of windows server.
Is this something to worry about? This kind of logging popped up since upgrading the secondary to 9.18.24.