How to install KVM on Debian 12

How to install KVM on Debian 12? 

# check CPU

egrep -c '(vmx|svm)' /proc/cpuinfo

# install base packages
apt install -y qemu-kvm libvirt-daemon libvirt-clients bridge-utils virt-manager

#qemu-kvm - package of primary KVM SW

#libvritd-daemon - service for virtualization 

#bridge-utils - for bridge connection

#virt-manager  -- GUI sw for virtualization

#check and run daemon for virtualization
systemctl status libvirtd
systemctl enable --now libvirtd

 

#execute command for autostart networking

 virsh net-start default
 
 virsh net-autostart default

 #check networkings
 virsh net-list --all

 # add module vhost_net to kernel -- boost network data trasnfer 

  /sbin/modprobe vhost_net

#check module 
  lsmod | grep vhost

#enable brige

 

vi /etc/network/interfaces

 

# -- add lines below (eth997 of course you replace for your real network interface)

 
  ## DHCP ip config file for br0 ##
auto br0
 
# Bridge setup
 iface br0 inet dhcp
    bridge_ports eth997

#check network

ip a s

Source: https://techviewleo.com/install-kvm-virt-manager-cockpit-debian/?expand_article=1