ip route add blackhole 203.169.27.0/24
ip route add blackhole 203.169.31.0/24
ip route add blackhole 203.169.26.0/24
ip route add blackhole 203.169.29.0/24
ip route add blackhole 203.169.25.0/24
ip route add blackhole 203.169.30.0/24
ip route add blackhole 203.169.28.0/24
ip route add blackhole 203.169.24.0/24