log messages with error: recvfrom

[Mischa]

Hi All,

I am running unbound on OpenBSD for some time now and I haven’t been able to figure out where the below error messages are coming from, how to fix them, or disable them. I have increased the verbosity beyond 1 in the past, but never provided more information then below.

May 20 07:25:13 name2 unbound: [64296:2] error: recvfrom 17 failed: Host is down
May 20 07:25:13 name2 unbound: [64296:2] error: recvfrom 25 failed: Host is down
May 20 08:20:36 name2 unbound: [72179:4] error: recvfrom 15 failed: Host is down
[snip]
Jul 26 05:54:06 name2 unbound: [23806:0] error: recvfrom 17 failed: Host is down
Jul 26 12:38:13 name2 unbound: [23806:0] error: recvfrom 16 failed: Host is down
Jul 26 12:38:13 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 26 16:47:04 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 26 22:21:09 name2 unbound: [23806:0] error: recvfrom 17 failed: Host is down
Jul 26 22:36:23 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 26 22:37:52 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 27 05:15:22 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 27 06:06:26 name2 unbound: [23806:0] error: recvfrom 21 failed: Host is down
Jul 27 06:06:26 name2 unbound: [23806:0] error: recvfrom 18 failed: Host is down
Jul 27 06:06:27 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 27 09:40:17 name2 unbound: [23806:0] error: recvfrom 15 failed: Host is down
Jul 27 09:40:17 name2 unbound: [23806:0] error: recvfrom 16 failed: Host is down
Jul 27 12:41:51 name2 unbound: [23806:0] error: recvfrom 18 failed: Host is down

Does anybody have some hints or pointers where these message are coming from?
As far as I can remember they have always been there.

Additional information:

root at name2:~ # unbound -V
Version 1.10.0

Configure line: --enable-allsymbols --with-ssl=/usr --with-libevent=/usr --with-libexpat=/usr --without-pythonmodule --with-chroot-dir=/var/unbound --with-pidfile= --with-rootkey-file=/var/unbound/db/root.key --with-conf-file=/var/unb
ound/etc/unbound.conf --with-username=_unbound --disable-shared --without-pthreads
Linked libs: pluggable-libevent 1.4.15-stable (it uses kqueue), LibreSSL 3.1.1
Linked modules: dns64 respip validator iterator

BSD licensed, see LICENSE in source package for details.
Report bugs to unbound-bugs at nlnetlabs.nl or https://github.com/NLnetLabs/unbound/issues

# /var/unbound/etc/unbound.conf
server:
        interface: 46.xx.xx.xx
        interface: 2axx:xx:xx::xx
        interface: 46.xx.xx.xx
        interface: 2axx:xx:xx::xx

        access-control: 0.0.0.0/0 refuse
        access-control: 127.0.0.0/8 allow
        access-control: 46.xx.xx.xx/xx allow

        access-control: ::0/0 refuse
        access-control: ::1 allow
        access-control: 2axx:xx::/xx allow

        hide-identity: yes
        hide-version: yes

        qname-minimisation: yes

        root-hints: "/var/unbound/db/root.hints"
        auto-trust-anchor-file: "/var/unbound/db/root.key"

        cache-max-ttl: 14400
        cache-min-ttl: 300
        prefetch: yes
        rrset-roundrobin: yes
        verbosity: 1

remote-control:
        control-enable: yes
        control-use-cert: no
        control-interface: /var/run/unbound.sock


root at name2:~ # sysctl kern.version
kern.version=OpenBSD 6.7 (GENERIC) #4: Wed Jul 15 10:50:49 MDT 2020
    root at syspatch-67-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC

Thanx!!

Mischa