ip route add blackhole 208.83.22.0/24
ip route add blackhole 208.83.21.0/24
ip route add blackhole 208.83.23.0/24
ip route add blackhole 2607:f178:10::/48
ip route add blackhole 208.83.20.0/24
ip route add blackhole 2607:f178:4::/48
ip route add blackhole 2607:f178:5::/48
ip route add blackhole 2607:f178::/48