general: critical
running bind 9.14.9 with Samba DLZ. bind crashes with a dynamic update from a client:
4-Jan-2020 16:53:53.253 database: info: samba_dlz: starting transaction on zone 0.0.10.in-addr.arpa
24-Jan-2020 16:53:53.256 database: info: samba_dlz: allowing update of signer=FREGE\$\@EHV.DJO.NL name=21.0.0.10.in-addr.arpa tcpaddr=1 0.0.0.21 type=PTR key=336-ms-7.1-6050.b8e0c671-3ec1-11ea-9c82-000c2964ff44/160/0
24-Jan-2020 16:53:53.258 database: info: samba_dlz: allowing update of signer=FREGE\$\@EHV.DJO.NL name=21.0.0.10.in-addr.arpa tcpaddr=1 0.0.0.21 type=PTR key=336-ms-7.1-6050.b8e0c671-3ec1-11ea-9c82-000c2964ff44/160/0
24-Jan-2020 16:53:53.258 update: info: client @0x80b40a000 10.0.0.21#61898/key FREGE\$\@EHV.DJO.NL: updating zone '0.0.10.in-addr.arpa/ NONE': deleting rrset at '21.0.0.10.in-addr.arpa' PTR
24-Jan-2020 16:53:53.262 general: critical: name.c:661: REQUIRE((__builtin_expect(!!((name1) != ((void *)0)), 1) && __builtin_expect(!! (((const isc__magic_t *)(name1))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n')))), 1))) failed, back trace
24-Jan-2020 16:53:53.263 general: critical: #0 0x2c8090 in ??
24-Jan-2020 16:53:53.263 general: critical: #1 0x4b0c4a in ??
24-Jan-2020 16:53:53.263 general: critical: #2 0x38f9a3 in ??
24-Jan-2020 16:53:53.263 general: critical: #3 0x803b22f88 in ??
24-Jan-2020 16:53:53.263 general: critical: #4 0x803b231fa in ??
24-Jan-2020 16:53:53.263 general: critical: #5 0x306dc3 in ??
24-Jan-2020 16:53:53.263 general: critical: #6 0x41ec09 in ??
24-Jan-2020 16:53:53.263 general: critical: #7 0x350e54 in ??
24-Jan-2020 16:53:53.263 general: critical: #8 0x331010 in ??
24-Jan-2020 16:53:53.263 general: critical: #9 0x3311cb in ??
24-Jan-2020 16:53:53.263 general: critical: #10 0x330543 in ??
24-Jan-2020 16:53:53.263 general: critical: #11 0x32ceb1 in ??
24-Jan-2020 16:53:53.263 general: critical: #12 0x4cd1e2 in ??
24-Jan-2020 16:53:53.263 general: critical: #13 0x8007d5736 in ??
24-Jan-2020 16:53:53.263 general: critical: exiting (due to assertion failure)