ip route add blackhole 103.22.188.0/23
ip route add blackhole 42.51.0.0/17
ip route add blackhole 42.51.64.0/18
ip route add blackhole 42.51.128.0/18
ip route add blackhole 103.22.190.0/23
ip route add blackhole 42.51.128.0/17
ip route add blackhole 42.51.0.0/18
ip route add blackhole 103.22.188.0/22
ip route add blackhole 42.51.192.0/18