Subject: [bug#29409] [PATCH 1/4] build: vm: Use netdev qemu parameter.

From: [email-masked] (Ludovic Courtès)
Date: Mon, 11 Dec 2017 17:32:52 +0100

[email-masked] skribis:

> From: Mathieu Othacehe <[email-masked]>
>
> * gnu/build/vm.scm (load-in-linux-vm): "-net nic" option is
> deprecated, replace it with "-netdev" and "-device" options.
>
> See https://wiki.qemu.org/Documentation/Networking.
> ---
>  gnu/build/vm.scm | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm
> index 20ee127..9e868f6 100644
> --- a/gnu/build/vm.scm
> +++ b/gnu/build/vm.scm
> @@ -113,7 +113,8 @@ the #:references-graphs parameter of 'derivation'."
>    (unless (zero?
>             (apply system* qemu "-nographic" "-no-reboot"
>                    "-m" (number->string memory-size)
> -                  "-net" "nic,model=virtio"
> +                  "-device" "virtio-net-pci,netdev=mynet"
> +                  "-netdev" "user,id=mynet"

IIUC the “user” part means that it does more than just update to the new
syntax: it also enable user-level networking support (built-in DHCP
server, etc.).  Is this correct?

If so, can we leave out “user”?

Thanks,
Ludo’.