vip-dummy0.service

[Unit]
Description=Create dummy0 interface for floating VIP
Before=keepalived.service
Wants=network-pre.target
After=network-pre.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/sbin/ip link add dummy0 type dummy
ExecStart=/sbin/ip link set dummy0 up
ExecStop=/sbin/ip link delete dummy0

[Install]
WantedBy=multi-user.target