[Dnsmasq-discuss] Upgrade to [x]ubuntu 23.10 means dnsmasg can't read /run/NetworkManager

[Neil Darlow]

I don't use Ubuntu variants but it may be worth checking if the Network manager package installs a systemd permissions file for the file in /run. If that's the case, you can override the permissions with your own version in /etc.

On 14 December 2023 22:46:36 GMT, Chris Green <cl at isbd.net> wrote:
>Up until now I have the following in my /etc/dnsmasq.conf:-
>
>    resolv-file=/run/NetworkManager/no-stub-resolv.conf
>
>This means that dnsmasq uses the upstream DNS that Network Manager
>configures.  When I'm on the local LAN this resolves to 'my' DNS
>server at 192.168.1.2, when I'm connected somewhere else Network
>Manager sorts things out accordingly and dnsmasq gets the right
>upstream DNS server.
>
>However the latest Ubuntu update has tightened the permissions on
>/etc/NetworkManager and dnsmasq can't read the file
>/run/NetworkManager/no-stub-resolv.conf.
>
>I know this is a slightly non-standard configuration but it has worked
>very nicely for me for some years.  Can anyone suggest a way to fix
>this?   Obviously /run/NetworkManager/no-stub-resolv.conf is created
>at every boot so the permissions will revert to 'too strict' every
>time I start the system.
>
>-- 
>Chris Green
>
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