ip route add blackhole 117.120.6.0/24
ip route add blackhole 117.120.5.0/24
ip route add blackhole 103.3.164.0/24
ip route add blackhole 117.120.0.0/21
ip route add blackhole 2400:ed00::/32
ip route add blackhole 117.120.7.0/24
ip route add blackhole 117.120.2.0/24