ip route add blackhole 162.250.153.0/24
ip route add blackhole 162.250.155.0/24
ip route add blackhole 162.250.159.0/24
ip route add blackhole 162.250.157.0/24
ip route add blackhole 162.250.156.0/24
ip route add blackhole 162.250.154.0/24
ip route add blackhole 162.250.158.0/24
ip route add blackhole 162.250.152.0/24