this please test and report back if you see problems; in the run-up to OpenBSD 6.9 we dropped back to 9.16.10 due to problems in interim releases CVE-2021-25214: A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly https://kb.isc.org/docs/cve-2021-25214 CVE-2021-25215: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself https://kb.isc.org/docs/cve-2021-25215 CVE-2021-25216: A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack https://kb.isc.org/docs/cve-2021-25216