Debian 9 Stretch
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Install KVM
2017/06/22
 
It's Virtualization with KVM ( Kernel-based Virtual Machine ) + QEMU.
This requires that CPU on your computer which has a function Intel VT or AMD-V.
[1] Install required packages.
root@dlp:~#
apt -y install qemu-kvm libvirt-daemon libvirt-daemon-system virtinst bridge-utils
[2] Enable vhost-net.
root@dlp:~#
modprobe vhost_net

root@dlp:~#
lsmod | grep vhost 

vhost_net              20480  0
tun                    28672  1 vhost_net
vhost                  45056  1 vhost_net
macvtap                24576  1 vhost_net
root@dlp:~#
echo vhost_net >> /etc/modules

[3] Configure Bridge networking.
root@dlp:~#
vi /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto ens33
# change like follows

iface ens3 inet manual

#
iface ens3 inet static
#
address 10.0.0.30
#
network 10.0.0.0
#
netmask 255.255.255.0
#
broadcast 10.0.0.255
#
gateway 10.0.0.1
#
dns-nameservers 10.0.0.30
# add bridge interface

iface br0 inet static
address 10.0.0.30
network 10.0.0.0
netmask 255.255.255.0
broadcast 10.0.0.255
gateway 10.0.0.1
dns-nameservers 10.0.0.30
bridge_ports ens3
bridge_stp off
auto br0
root@dlp:~#
reboot
root@dlp:~#
ip addr 

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
    link/ether 52:54:00:99:d3:a8 brd ff:ff:ff:ff:ff:ff
3: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 52:54:00:99:d3:a8 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global br0
       valid_lft forever preferred_lft forever
    inet6 fe80::5054:ff:fe99:d3a8/64 scope link
       valid_lft forever preferred_lft forever
 
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