How Do I Configure Public Private Networking?

After adding a private network port to an instance, you need to modify the netplan to accommodate the private routing.

1. Run ip -a and copy the mac address and the adapter name (eg: ens3)
2. Open /etc/netplan/50-netplan.yaml for editing
3. Under ethernets add a new section in the format below
4. Make sure set-name and macaddress match what was showing with ip -a
5. Save and close the file
6. Run netplan apply to apply ip configuration and set the correct route table

ens10:
   dhcp4: true
   dhcp4-overrides:
        use-routes: false
    match:
        macaddress: fa:16:3e:20:89:ca
    mtu: 1500
    set-name: ens10