Debian 10 Buster
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KVM : Install2019/07/23

 
This is the Virtualization Configuration with KVM ( Kernel-based Virtual Machine ) + QEMU.
This requires that the 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 libosinfo-bin bridge-utils
# make sure modules are loaded

root@dlp:~#
lsmod | grep kvm

kvm_intel             245760  0
kvm                   724992  1 kvm_intel
irqbypass              16384  1 kvm
[2] Enable vhost-net.
root@dlp:~#
modprobe vhost_net

root@dlp:~#
lsmod | grep vhost

vhost_net              24576  0
tun                    49152  1 vhost_net
vhost                  49152  1 vhost_net
tap                    28672  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

auto ens2
# change existing setting like follows
iface ens2 inet manual
#iface ens2 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 10.0.0.10

# add bridge interface setting
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 ens2
bridge_stp off
auto br0

root@dlp:~#
root@dlp:~#
ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: ens2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
    link/ether 52:54:00:d7:7e:1d 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:d7:7e:1d 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:fed7:7e1d/64 scope link
       valid_lft forever preferred_lft forever
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