lost and found ( for me ? )

Ubuntu 13.10: install / use openvswitch within KVM

Here are trial and error logs when installing openvswitch.

During the following operation, you will lose internet connectivity.
# tail -1 /etc/lsb-release ;uname -ri
3.11.0-15-generic x86_64

install openvswitch via apt-get
# apt-get install openvswitch-switch

:# cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto eth0
#iface eth0 inet manual
iface eth0 inet dhcp

reboot the OS.
after booting the OS, you can not access to the internet.
type the following command.
2001  ovs-vsctl add-br br0
2003  ovs-vsctl add-port br0 eth0
2004  ifconfig eth0
2006  ifconfig br0
2010  route add default gw

I can not figure out how to write the last three commands(ifconfig eth0, ifconfig br0, route add..)  in /etc/network/interfaces files correctly..
So I type “ifconfig eth0, ifconfig br0, route add ..” commands every time when booting the OS…

In my environments, when booting the OS, eth0 gets an IP from DHCP, and then I login to the OS and type “ifconfig eth0, ifconfig br0 …, route add..“ via shell prompt.

[ use KVM with openvswith ]

edit VM config

virsh edit <vm name>
   <interface type='bridge'>
     <mac address='mac address'/>
     <source bridge='br0'/>
     <virtualport type='openvswitch'>

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