unbound without internet

[Hans Sandsdalen]

The default is no, so you set it to yes? 

--- 
HANS SANDSDALEN 
Manager IT Tromsø 
Space Ground Systems 
Kongsberg Defence & Aerospace AS 

+47 977 62 632 
[ mailto:hans at spacetec.no | hans at spacetec.no ] 
[ http://www.kongsberg.com/space | www.kongsberg.com/space ] 




From: "tito via Unbound-users" <unbound-users at lists.nlnetlabs.nl> 
To: "Hans Sandsdalen via Unbound-users" <unbound-users at lists.nlnetlabs.nl> 
Sent: Tuesday, September 5, 2023 8:12:06 AM 
Subject: Re: unbound without internet 

On Tue, 5 Sep 2023 07:46:53 +0200 (CEST) 
Hans Sandsdalen via Unbound-users <unbound-users at lists.nlnetlabs.nl> wrote: 

> Hi 
> 
> Yesteday we lost connection to internet. I supposed that dns would be ok for our internal hosts. But unbound became very slow, sometimes did not respond at all. We use nsd and unbound. 
> 
> What can I do to prevent this in the future? 
> 
> /etc/unbound/unbound.conf.d/ contains tree files: 
> KSPT.conf qname-minimisation.conf root-auto-trust-anchor-file.conf 
> 
> KSPT.conf: 
> 
> server: 
> verbosity: 1 
> interface: 0.0.0.0 
> access-control: 192.168.0.0/16 allow 
> access-control: 10.0.0.0/8 allow 
> access-control: 127.0.0.0/8 allow 
> port: 53 
> do-ip4: yes 
> do-ip6: no 
> root-hints: "/etc/unbound/root.hints" 
> cache-min-ttl: 300 
> cache-max-ttl: 86400 
> prefetch: yes 
> num-threads: 1 
> minimal-responses: yes 
> prefetch: no 
> do-not-query-localhost: no 
> local-zone: "domain.no" nodefault 
> local-zone: "168.192.in-addr.arpa" nodefault 
> local-zone: "10.in-addr.arpa" nodefault 
> domain-insecure: "domain.no" 
> domain-insecure: "168.192.in-addr.arpa" 
> domain-insecure: "10.in-addr.arpa" 
> private-domain: "domain.no" 
> stub-zone: 
> name: "168.192.in-addr.arpa." 
> stub-addr: 127.0.0.1 at 1053 
> stub-zone: 
> name: "10.in-addr.arpa." 
> stub-addr: 127.0.0.1 at 1053 
> stub-zone: 
> name: "spacetec.no" 
> stub-addr: 127.0.0.1 at 1053 
> 
> remote-control: 
> control-enable: yes 
> 
> qname-minimisation.conf: 
> 
> server: 
> # Send minimum amount of information to upstream servers to enhance 
> # privacy. Only sends minimum required labels of the QNAME and sets 
> # QTYPE to NS when possible. 
> 
> # See RFC 7816 "DNS Query Name Minimisation to Improve Privacy" for 
> # details. 
> 
> qname-minimisation: yes 
> 
> root-auto-trust-anchor-file.conf: 
> 
> server: 
> # The following line will configure unbound to perform cryptographic 
> # DNSSEC validation using the root trust anchor. 
> auto-trust-anchor-file: "/var/lib/unbound/root.key" 
> 
> --- 
> HANS SANDSDALEN 
> Manager IT Tromsø 
> Space Ground Systems 
> Kongsberg Defence & Aerospace AS 
> 
> +47 977 62 632 
> [ mailto:hans at spacetec.no | hans at spacetec.no ] 
> [ http://www.kongsberg.com/space | www.kongsberg.com/space ] 
> 
> 
> 
> 
> CONFIDENTIALITY This e-mail and any attachment contain KONGSBERG information which may be proprietary, confidential or subject to export regulations, and is only meant or the intended recipient(s). Any disclosure, copying, distribution or use is prohibited, if not otherwise explicitly agreed with KONGSBERG. If received in error, please delete it immediately from your system and notify the sender properly. 
> 
Hi, 

infra-keep-probing: <yes or no> 
If enabled the server keeps probing hosts that are down, in the one probe at a time regime. Default is no. 
Hosts that are down, eg. they did not respond during the one probe at a time period, are marked as down 
and it may take infra-host-ttl time to get probed again. 

This fixed it for me. Hope this helps. 

Ciao, 
Tito 
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