[Unit]
Description=Cloudflare DDNS updater (local IPv4 via default route)
Wants=network-online.target
After=network-online.target

[Service]
Type=oneshot
EnvironmentFile=/etc/cf-ddns/cf-ddns.env
ExecStart=/usr/local/bin/cf-ddns
Nice=10
IOSchedulingClass=best-effort

[Install]
WantedBy=multi-user.target