[Unit]
Description=IS-IS routing daemon
BindsTo=zebra.service
Wants=network.target
After=zebra.service network-pre.target
Before=network.target
ConditionPathExists=/etc/quagga/isisd.conf

[Service]
Type=forking
EnvironmentFile=/etc/sysconfig/quagga
ExecStart=/usr/sbin/isisd -d $ISISD_OPTS -f /etc/quagga/isisd.conf
Restart=on-abort

[Install]
WantedBy=multi-user.target