[knot-dns-users] [2.9] DDNS failure

Hello, Since I upgraded to 2.9 (2.9.0-1~cz.nic~buster1), DDNS update fails: oct. 14 11:10:25 arrakeen knotd[15543]: info: [durel.org.] DDNS, processing 1 updates oct. 14 11:10:25 arrakeen knotd[15543]: error: [durel.org.] DNSSEC, failed to fix NSEC3 chain (invalid parameter) oct. 14 11:10:25 arrakeen knotd[15543]: 2019-10-14T11:10:25 error: [durel.org.] DNSSEC, failed to fix NSEC3 chain (invalid parameter) oct. 14 11:10:25 arrakeen knotd[15543]: 2019-10-14T11:10:25 error: [durel.org.] DDNS, processing failed (invalid parameter) oct. 14 11:10:25 arrakeen knotd[15543]: error: [durel.org.] DDNS, processing failed (invalid parameter) DDNS are generated with knsupdate: knsupdate -k /etc/letsencrypt.sh/hooks/tsig.key $file Is there a config change that can explain that ? Thanks, -- Bastien Durel