==================================================
<code>
      ip add
      nano /etc/netplan/50-cloud-init.yaml 
      ip add
      netplan apply

# cat /etc/netplan/50-cloud-init.yaml 
network:
    ethernets:
        enp0s3:
            dhcp4: true
        enp0s8:				
            dhcp4: no
            dhcp6: no
            addresses: [10.0.2.1/24, ]
    version: 2
</code>
==================================================
<code>
     apt install dnsmasq
     nano /etc/dnsmasq.d/56.conf 
     service  dnsmasq restart

# cat /etc/dnsmasq.d/56.conf 
# Set the interface on which dnsmasq operates.
# If not set, all the interfaces is used.
interface=enp0s8

# To disable dnsmasq's DNS server functionality.
port=0

# To enable dnsmasq's DHCP server functionality.
dhcp-range=enp0s8,192.168.56.100,192.168.56.199,4h

# Set DNS server as Router.
dhcp-option=6,192.168.0.1

# Logging.
log-facility=/var/log/dnsmasq.log   # logfile path.
log-async
log-queries # log queries.
log-dhcp    # log dhcp related messages.

</code>
==================================================
<code>
   apt install tftpd-hpa tftp-hpa 
   cd 
   wget http://archive.ubuntu.com/ubuntu/dists/disco/main/installer-amd64/current/images/netboot/netboot.tar.gz
   tar -xvzf netboot.tar.gz -C /var/lib/tftpboot/
   chown -R nobody:nogroup /var/lib/tftpboot
   echo "dhcp-boot=pxelinux.0,roo,192.168.56.1 " >/etc/default/tftpd-hpa 
   service tftpd-hpa restart
   service tftpd-hpa status


</code>
Configure static ip netplan
  * https://www.tecmint.com/configure-network-static-ip-address-in-ubuntu/}

Configure dnsmasq dhcpserver
  * https://yulistic.gitlab.io/2018/03/configuring-dnsmasq-only-for-dhcp-server-in-ubuntu-pc/


NetBoot
  * https://help.ubuntu.com/community/Installation/Netboot

Remaster a CD unattended install
  * https://askubuntu.com/questions/122505/how-do-i-create-a-completely-unattended-install-of-ubuntu

Ubuntu Diskless
  * https://help.ubuntu.com/community/DisklessUbuntuHowto

CentOS Cloud Init
  * https://stafwag.github.io/blog/blog/2019/03/03/howto-use-centos-cloud-images-with-cloud-init/
  * https://makandracards.com/makandra/41188-virsh-reload-xml-config-file
  * https://linuxhint.com/cloud_init_vms/

KVM Networking
  * https://help.ubuntu.com/community/KVM/Networking