[Unit]
Description=Snort IDS system listening on '%I'
[Service]
Type=simple
ExecStartPre=/usr/sbin/ip link set up dev %I
ExecStart=/usr/bin/snort -A fast -b -p -u snort -g snort -c /etc/snort/snort.conf -i %I
[Install]
Alias=multi-user.target.wants/snort@eth0.service