bringing up bionic .44, no network

[t4_4t]

If your purpose is to use "Static IP Addresses" on "bionic-lxde-rock64-0.6.44-239-arm64.img",
it will be helpful to refer to the following.

"CONFIGURE STATIC IP ADDRESSES ON UBUNTU 18.04 LTS SERVER"
https://websiteforstudents.com/configure...8-04-beta/
"Netplan configuration examples"
https://netplan.io/examples

The following is an example.
(*It is a yaml file, so be careful of indent)
And, there is no need to change other files. (ex. /etc/resolv.conf: symbolic-link)

Code:

First login
# cp -a /etc/netplan/eth0.yaml /etc/netplan/eth0.yaml.bak
# cat /etc/netplan/eth0.yaml    #// Confirm yaml file
network:
 version: 2
 renderer: networkd
 ethernets:
   eth0:
     dhcp4: true

# vi /etc/netplan/eth0.yaml    #// Modify yaml file
network:
 version: 2
 renderer: networkd
 ethernets:
   eth0:
     dhcp4: false
     addresses: [192.168.0.222/24]
     gateway4:   192.168.0.254
     nameservers:
       addresses: [192.168.0.253, 192.168.0.254]
     dhcp6: false

# netplan apply
# reboot