unbound resolving different address intermittenly
Ralph Dolmans
ralph at nlnetlabs.nl
Wed Oct 31 14:28:42 UTC 2018
Hi Andrew,
Not sure I understand your question/problem. Is Unbound sometimes
skipping the forwarder and resolving as if there is no forwarder
configured? Do you have forward-first enabled? In that case Unbound will
ignore the configured forwarder when they become unreachable. Maybe that
happened?
-- Ralph
On 30-10-18 14:52, Andrew Meyer via Unbound-users wrote:
> I have recently setup unbound on CentOS 7 (latest) running version
> 1.6.6. So far unbound has been chugging away for about a month. In my
> configuration I have an on premise server configured with lots of
> internal forwarded domains going to Amazon Route53. As of yesterday
> unbound started to flip/flop resolution from the internal/private zones
> to the external zones. I'm not sure why. I have turned up the logging
> verbosity to see if there was an apparent issue. I though at one point
> we hit a wall with number of packets per request. My colleague and I
> thought we hit a resource records maximum limit. We have opened a
> ticket with Amazon to get more information on their side.
>
> In my config file:
> num-threads: 4
> so-rcvbuf: 4m
> so-sndbuf: 4m
> cache-max-negative-ttl: 10
> do-ip4: yes
> do-ip6: yes
> do-udp: yes
> do-tcp: yes
>
>
> Everything in my zones config file is a forward-zone and not a
> stub-zone, not sure if that matters.
>
> Any help is greatly appreciated.
>
> Regards,
> Andrew
More information about the Unbound-users
mailing list