RPi Z USB-OTG Ethernet

rpiz--usb-otg--ethernet.sh

# After flashing the image 
# Open the new filesystem on the SD card
# And inside /boot/config.txt, add the following:
# dtoverlay=dwc2
#
# And in /boot/cmdline.txt, add after `rootwait`:
# modules-load=dwc2,g_ether
# Then wire up the Pi to HDMI, power source and a keyboard and run the following commands:

sudo systemctl enable systemd-networkd
sudo systemctl start systemd-networkd

sudo mkdir -p /etc/systemd/network
# Replace gateway with your hosts IP address.
sudo tee /etc/systemd/network/usb0.network > /dev/null <<EOF
[Match]
Name=usb0

[Network]
Address=192.168.0.111/24
Gateway=192.168.0.3
DNS=8.8.8.8

[Route]
Destination=192.168.0.0/24
Gateway=192.168.0.3

[Route]
Destination=0.0.0.0/0
Gateway=192.168.0.3
EOF
 
sudo tee /etc/systemd/system/usb0-up.service > /dev/null <<EOF
[Unit]
Description=Force usb0 up at boot
Before=network-pre.target
Wants=network-pre.target

[Service]
Type=oneshot
ExecStart=/sbin/ip link set usb0 up

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl enable usb0-up
sudo systemctl enable sshd # Modify the conf file in /etc/sshd/... if you wish to change settings for SSH
sudo shutdown -r now


# That's it!
# Plug the RPi Zero into your computers USB port
# and an ethernet adapter should show up with the device.
# Then: ssh <username>@192.168.0.111
#
# NOTE: You might have to download and install
# a RNDIS driver (legacy driver) for the purpose.