[Unit]
Description=Network Flapping Simulation
After=network.target

[Service]
ExecStart=/usr/local/bin/flapping_simulation.sh
ExecStop=/usr/bin/iptables -D FORWARD -i ens4 -o ens5 -j DROP ; /usr/bin/iptables -D FORWARD -i ens5 -o ens4 -j DROP
Restart=always

[Install]
WantedBy=multi-user.target