ip route add blackhole 103.81.60.0/23
ip route add blackhole 103.81.60.0/22
ip route add blackhole 103.81.63.0/24
ip route add blackhole 103.81.61.0/24
ip route add blackhole 103.81.62.0/23
ip route add blackhole 103.81.62.0/24
ip route add blackhole 103.81.60.0/24