HOW TO qemu guest in the same host network (bridge mode)

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HOW TO qemu guest in the same host network (bridge mode)

Postby networker_ » 2015-10-16 21:33


It was hard to me figure out this so I want to share briefly how I managed this after read a lot of confusing (to me) documentation.

Let's assume:
- physical host behind a router with eth0
- qemu VM already created

and you want the VM be in the same network than host as if another physical machine.


ifconfig eth0
brctl addbr br0
brctl addif br0 eth0

****if you have dhcp: *******
dhclient br0

**** or if you want static IP *******

in interfaces change eth0 by br0
auto br0
iface br0 inet static
bridge_ports eth0
bridge_stp off
bridge_fd 0
bridge_maxwait 0

restart networking service

br0 must be allowed in /etc/qemu/bridge.conf
echo "allow br0" >> bridge.conf

# ls -l /etc/qemu/bridge.conf
-rw-r----- 1 root qemu 10 oct 16 17:49 /etc/qemu/bridge.conf

start vm
# qemu-system-x86_64 -m 256 myVM.raw -net nic -net bridge,br=br0


edit /etc/network/interfaces with regular static conf
edit resolv.conf if necessary
restart networking service


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