[Unit]
Description=Modem Port Link
After=

[Service]
ExecStart=/usr/bin/mportlink
Restart=on-abort
CapabilityBoundingSet=CAP_SYS_ADMIN CAP_NET_ADMIN
ProtectSystem=true
ProtectHome=true
PrivateTmp=true
RestrictAddressFamilies=AF_NETLINK AF_UNIX AF_QIPCRTR
NoNewPrivileges=true
User=root

[Install]
WantedBy=multi-user.target