[clue] Virtual networking problem

[Mike Nolte]

You probably want to create a bridge from the host's single NIC.  I'm
guessing that you've seen this page, right?
https://wiki.archlinux.org/index.php/QEMU

You'll want to use either section 6.3.3 or 6.3.4.  I've never actually
used qemu-bridge-helper, but that all seems directly relevant.  The host
forwards IP, and each VM should be able to connect, as though it's on
the network.

Or you could just install something like Proxmox.

On 6/1/2014 6:57 PM, Matt Gushee wrote:
> Hello, all--
>
> Long time no post! Hope everybody's doing well.
>
> So, I'm trying to figure out how to set up a virtual network on my
> Arch Linux box. I'm planning to set up some VPS web servers, and want
> to test out my automated configuration management procedures locally
> before I go live (I'm using Ansible, by the way, though I don't think
> that especially matters in this context). I believe I've found the
> right tools for the job, but their documentation assumes background
> that I don't have. I think the main problem is that I don't know the
> right names for what I want to do with the network.
>
> So, I need one or more virtual machines running FreeBSD. I'm okay on
> this part: I've set up a VM using QEMU and installed FreeBSD 10.0.
>
> And I need to be able to:
>
> * Connect to the internet from each VM, so I can install software packages.
>
> * Connect to the internet from the host machine--because I will need
> to refer to various online docs as I go.
>
> * Connect to each VM from the host machine via TCP/IP.
>
> The host machine has a single wired Ethernet connection to my home
> network, which is connected to the internet via DSL.
>
> The tools I have found for setting up the network are vde2 and slirp.
> I seem to have gotten the setup somewhat working, in that the BSD box
> obtains an IP address from a virtual DHCP server, and a virtual
> network device appears on the host machine. But there is no actual
> connectivity. So, questions:
>
> * I think what I want is a virtual TAP device. Is that right, or do I
> need something else?
>
> * How do I connect the virtual interface on the host machine to the
> real, internet-connected interface?
>
> * How do I determine what IP address to assign to the virtual
> interface ... or does that not matter?
>
> P.S.: I have the impression networking might be easier with VirtualBox
> (and I've used it for other things in the past), but for some reason I
> can't get the VirtualBox host modules to load; I also tried installing
> VMWare player, and the installation failed. So unless one of those
> makes the problem *a lot* easier, I think I'll stick with QEMU.
>
> Thanks for any insights!
>
> --
> Matt Gushee
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