[Unit]
Description=authoritative DNS server
Wants=network.target
After=network.target

[Service]
Type=forking
ExecStartPre=/bin/mkdir -p /run/nsd/
ExecStart=/usr/sbin/nsd
Restart=always
RestartSec=30
PIDFile=/var/run/nsd/nsd.pid

[Install]
WantedBy=multi-user.target