On Wed, 6 Sep 2023 13:21:16 +0200 Olivier Benghozi via Unbound-users <unbound-users@lists.nlnetlabs.nl> wrote:
> Hi, > > what I understood (after reading some comments in the patch introducing it, > something is missing in the doc about it) is that, about infra-keep-probing: > - off: dead servers will be tried again (probed) in infra-host-ttl seconds > (that is 15 minutes per default) > - on: they will be tried again every two minutes This is my empiric experience. By default when line goes down hosts are marked offline and not queried before 15 minutes so you have no DNS even if the line comes up again after a few minutes. Setting infra-keep-probing to yes and lowering infra-host-ttl to e.g. 15 seconds gives you DNS resolution ASAP. > > Le mer. 6 sept. 2023 à 07:42, Hans Sandsdalen via Unbound-users < > unbound-users@lists.nlnetlabs.nl> a écrit : > > > 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 > > > > *h...@spacetec.no <h...@spacetec.no>**www.kongsberg.com/space > > <http://www.kongsberg.com/space>* > > > > > > > > ------------------------------ > > *From: *"tito via Unbound-users" <unbound-users@lists.nlnetlabs.nl> > > *To: *"Hans Sandsdalen via Unbound-users" < > > unbound-users@lists.nlnetlabs.nl> > > *Sent: *Tuesday, September 5, 2023 8:12:06 AM > > *Subject: *Re: unbound without internet > > > > 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. > > > > >
