Configure loopback IP

Configure loopback IP - 10.10.10.10 on the VM so it can be used for binding containers to it.

Create config file with sudo

sudo vim /etc/netplan/loopback.yaml

network:
  version: 2
  ethernets:
    lo:
      addresses:
        - 10.10.10.10/32

Save & apply (:wq & press enter)

Set correct permissions for the file

sudo chmod 600 /etc/netplan/loopback.yaml

Apply netplan config

sudo netplan apply

Validate IPv4 is present on interface

ip -4 addr show dev lo

ip -4 addr show dev lo
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 10.10.10.10/32 scope global lo
       valid_lft forever preferred_lft forever

Next, proceed with IPv6 network configuration