unbound error message in log (26.07)

[jarmo]

Greetings.

I started exploring system logs of my Netgate device because my network started hanging and some devices reported that DNS is down. I found this kind of message appearing in system log on a regular basis:

Aug 16 21:16:30 	php-fpm 	614 	NOTICE The command '/usr/local/sbin/unbound -c /var/unbound/unbound.conf' returned exit code '1', the output was '[1786904190] unbound[10721:0] warning: setsockopt(..., SO_SNDBUF, ...) was not granted: No buffer space available [1786904190] unbound[10721:0] warning: so-sndbuf 4194304 was not granted. Got 57344. To fix: start with root permissions(linux) or sysctl bigger net.core.wmem_max(linux) or kern.ipc.maxsockbuf(bsd) values. or set so-sndbuf: 0 (use system value). [1786904190] unbound[10721:0] error: bind: address already in use [1786904190] unbound[10721:0] fatal error: could not open ports' 

Could this be related to DNS not being available?

I am running DNS resolver with DNSSEC on. I think other DNS settings are system defaults.

[johnpoz]

@jarmo dnssec is default. But yeah kind of hard to answer dns when it can not listen for someone to ask it something.

bind: address already in use [1786904190] unbound[10721:0] fatal error: could not open ports'

Kill all your unbound processes - and restart it. Or look to what else is listening on port 53.