[Pdns-users] On Alpine Linux: "Failed to update . records, RCODE=-1"

[okTurtles]

So I cannot get powerdns or unbound running on Alpine Linux 3.6.2, both seem to be encountering the same mysterious problem.

I've tried everything for several days now, searched every search engine. No idea what to do. :-(

$ uname -a
Linux server 4.9.32-0-hardened #1-Alpine SMP Fri Jun 16 12:20:58 GMT 2017 x86_64 GNU/Linux

$ pdns_recursor --loglevel=9999
Nov 29 20:57:29 PowerDNS Recursor 4.0.4 (C) 2001-2016 PowerDNS.COM BV
Nov 29 20:57:29 Using 64-bits mode. Built using gcc 6.3.0 on May  4 2017 11:46:17 by buildozer at build-3-6-x86_64.
Nov 29 20:57:29 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2.
Nov 29 20:57:29 Reading random entropy from '/dev/urandom'
Nov 29 20:57:29 If using IPv6, please raise sysctl net.ipv6.route.max_size, currently set to 4096 which is < 16384
Nov 29 20:57:29 NOT using IPv6 for outgoing queries - set 'query-local-address6=::' to enable
Nov 29 20:57:29 Only allowing queries from: 0.0.0.0/0
Nov 29 20:57:29 PowerDNS Recursor itself will distribute queries over threads
Nov 29 20:57:29 Inserting rfc 1918 private space zones
Nov 29 20:57:29 Listening for UDP queries on 0.0.0.0:53
Nov 29 20:57:29 Enabled TCP data-ready filter for (slight) DoS protection
Nov 29 20:57:29 Listening for TCP queries on 0.0.0.0:53
Nov 29 20:57:29 Raised soft limit on number of filedescriptors to 1049 to match max-mthreads and threads settings
Nov 29 20:57:29 Set effective group id to 103
Nov 29 20:57:29 Set effective user id to 101
Nov 29 20:57:29 Launching 3 threads
Nov 29 20:57:29 Done priming cache with root hints
Nov 29 20:57:29 Enabled 'epoll' multiplexer
Nov 29 20:57:29 Done priming cache with root hints
Nov 29 20:57:29 Done priming cache with root hints
Nov 29 20:57:37 Failed to update . records, got an exception
Nov 29 20:57:37 Failed to update . records, RCODE=-1
Nov 29 20:57:37 Failed to update . records, got an exception
Nov 29 20:57:37 Failed to update . records, RCODE=-1
Nov 29 20:57:37 Failed to update . records, got an exception
Nov 29 20:57:37 Failed to update . records, RCODE=-1
Nov 29 20:59:00 Failed to update . records, got an exception
Nov 29 20:59:00 Failed to update . records, RCODE=-1
Nov 29 21:00:23 Failed to update . records, got an exception
Nov 29 21:00:23 Failed to update . records, RCODE=-1
^C

I have tried with the UFW firewall on (with port 53 open) and with it off. Nothing helps.

Any help is greatly appreciated!!

Thanks for any clues,
Greg