Systemd unit file to establish VPN with sshuttle command

sshuttle.service

# (0) Replace the gateway server name and the subnet address with your own values.
# (1) Put this file into ~/.config/systemd/user/sshuttle.service
# (2) Invoke `systemctl --user daemon-reload`
# (3) Invoke `systemctl --user start sshuttle.service`

[Unit]
Description=sshuttle
Requires=gpg-agent-ssh.socket
After=gpg-agent-ssh.socket

[Service]
Type=simple
Environment=SSH_AUTH_SOCK=/run/user/%U/gnupg/S.gpg-agent.ssh
ExecStart=/usr/bin/sshuttle --remote=ssh-gateway-server.example.jp 198.51.100.0/24

[Install]
WantedBy=default.target