[Dnsmasq-discuss] Possible to reuse Cache over restats?

[Tobias Hochgürtel]

On Wed, Jun 29, 2022 at 08:25:18PM +0000, Dominik Derigs wrote:

  * Tell us which version of dnsmasq is being used

  * Reread the manual page and in particular --log-queries option



[root at router-fedora ~]# hostnamectl

Static hostname: router-fedora

       Icon name: computer-desktop

         Chassis: desktop 🖥

      Machine ID: c9c0e33265b848bfbce224fd8615fb30

         Boot ID: 0824361c352745c0a35a75167a2f81a0

Operating System: Fedora Linux 36 (Server Edition)

     CPE OS Name: cpe:/o:fedoraproject:fedora:36

          Kernel: Linux 5.18.6-200.fc36.x86_64

    Architecture: x86-64

Hardware Vendor: BIOSTAR Group

  Hardware Model: N3150NH





[root at router-fedora ~]# dnsmasq --version

Dnsmasq version 2.86  Copyright (c) 2000-2021 Simon Kelley

Compile time options: IPv6 GNU-getopt DBus no-UBus no-i18n IDN2 DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC loop-detect inotify dumpfile



This software comes with ABSOLUTELY NO WARRANTY.

Dnsmasq is free software, and you are welcome to redistribute it

under the terms of the GNU General Public License, version 2 or 3.





From: Dnsmasq-discuss <dnsmasq-discuss-bounces at lists.thekelleys.org.uk> on behalf of Donald Muller <donmuller22 at outlook.com>

Date: Thursday, 30. June 2022 at 02:48

To: Geert Stappers <stappers at stappers.nl>, "dnsmasq-discuss at lists.thekelleys.org.uk" <dnsmasq-discuss at lists.thekelleys.org.uk>

Subject: Re: [Dnsmasq-discuss] Possible to reuse Cache over restats?



Also, what you are running it on?



From: Dnsmasq-discuss <dnsmasq-discuss-bounces at lists.thekelleys.org.uk> on behalf of Geert Stappers via Dnsmasq-discuss <dnsmasq-discuss at lists.thekelleys.org.uk>

Sent: Wednesday, June 29, 2022 6:14:30 PM

To: dnsmasq-discuss at lists.thekelleys.org.uk <dnsmasq-discuss at lists.thekelleys.org.uk>

Subject: Re: [Dnsmasq-discuss] Possible to reuse Cache over restats?



On Wed, Jun 29, 2022 at 08:25:18PM +0000, Dominik Derigs wrote:

> On Wed, 2022-06-29 at 18:37 +0000, Tobias Hochgürtel wrote:

> > There isn't a feature to reuse the dns-cache?

> > or a plan to add this feature?

> >

>

> There is no such feature and there is also nothing planned at the moment



Oh, it was not a joke.





> However, restarting dnsmasq once per hour surely is the least optimal

> solution to circumvent what you are observing.



So true.





> On Wed, 2022-06-29 at 18:37 +0000, Tobias Hochgürtel wrote:

> > I also don't know how I can analyse that behavior.

>

> You could use some widely known and used tools like Wireshark where various

> tutorial are available to see whether the issue is dnsmasq not responding

> or the queries not making their way to dnsmasq or if something happens to

> the queries sent upstream to the forward destionation, or whatever else may

> be happening. We can surely give some assistance here, if you want.



Here already some assistance:



* Tell us which version of dnsmasq is being used

* Reread the manual page and in particular --log-queries option





Groeten

Geert Stappers

--

Silence is hard to parse



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