ip route add blackhole 131.100.80.0/23
ip route add blackhole 2804:1bf4::/32
ip route add blackhole 131.100.82.0/24
ip route add blackhole 131.100.80.0/24
ip route add blackhole 131.100.83.0/24
ip route add blackhole 131.100.81.0/24
ip route add blackhole 131.100.80.0/22