Dnsmasq as a package or as a service for virt-manager?

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1

On the nixos wiki:

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but dnsmasq is also installable as a service:

services.dnsmasq.enable= true;

Will dnsmasq installed as service work also?

Or, the better question is: Why is dnsmasq not set as a dependency when installing virt-manager? Isn’t networking extremely important?

2

dnsmasq isn’t required for like bridge networking. But yea both ways work because the service definition will add the package to your system.

3

so the reason why dnsmasq is not installed automatically (as dependency) when install virt-manager, is because it isn’t actually important or even needed?

4

Dnsmaq is needed for what you want, but it’s not like mandatory for the package to work. I feel like you are right it should be included, possibly best to open a PR.

5

i don’t know how to open a pr for this. can you do it please thanks.

6

virt-manager is just a graphical interface for managing libvirt. It’s libvirt that needs the dnsmasq service enabled, not virt-manager. When you enable libvirt on nixos via the virtualisation.libvirtd.enabled option, dnsmasq is pulled and started, as a dependency.

  • virt-manager can also manage:
    Remote libvirt sessions over ssh via qemu+ssh://user@hostname
  • Local, non daemonized vm’s that use userspace networking (slirp) instead of dnsmasq, via qemu:///session

So, dnsmasq isn’t strictly needed in order for virt manager to work.

7

so instruction in the nixos wiki is not needed?

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8

A lot of stuff on the wiki is outdated unfortunately.