Set DNSStubListenerExtra

[pauldraper]

What I'd like:

I would like to set systemd-resolve DNSStubListenerExtra.

Specifically to the Docker gateway IP, to so that orchestrated containers have cached DNS responses from systemd-resolve.

Any alternatives you've considered:

I use a host container to modify /etc/systemd/resolved.conf. That is unnecessarily fragile.

Another workaround is to configure, package, and deploy a separate DNS forwarder as a daemon or host container, such as dnsmasq or CoreDNS, which run in host networking mode, and forward queries to systemd-resolve. That is unnecessarily complex.

[koooosh]

Thanks for the issue @pauldraper . This seems suitable as a new DNS setting, something like settings.dns.stub-listener-extra.

In the past, we've had users contribute settings they desire to https://github.com/bottlerocket-os/bottlerocket-settings-sdk. Feel free to take a stab -- this is the main file to update . Otherwise, we will work on this as a feature request.