auto lo
iface lo inet loopback

auto vlan10
iface vlan10 inet manual
    pre-up iptables-restore < /etc/network/firewall
    up ip link set up dev vlan10
    up ip addr add 198.51.100.19/26 brd + dev vlan10
    up ip route add default via 198.51.100.1 dev vlan10
    down ip addr del 198.51.100.19/26 dev vlan10
    down ip link set down dev vlan10

auto vlan60
iface vlan60 inet manual
    up ip link set up dev vlan60
    up ip addr add 10.1.60.1/24 brd + dev vlan60
    down ip addr del 10.1.60.1/24 dev vlan60
    down ip link set down dev vlan60