How to bridge network

[c.buhtz at posteo.jp]

Hello,

usually I am a user of VirtualBox. There it is very easy to configure a 
VM that way that it is visible in the current local network (e.g. a home 
network with one simple rooter). You have to configure "bridge network" 
in the VM.

I tried to do this with "virt-manager", too. But it wants the name of a 
device and can't find it. I was looking around in the documentation and 
for a HowTo but couldn't find something. I only can find tutorials about 
vanially qemu configurations where I have to manipulate the network 
config files of my own host. That is not an option. VirtualBox can 
handle that by its own. And I assume that qemu is much more developed 
that VB and it is possible somehow.

I know my description is to broad for a detailed answer. But maybe you 
can point me into the right direction, give me a link to a howto or ask 
some important questions that makes me think. ;)

Kind
Christian