ip route add blackhole 169.253.4.0/24
ip route add blackhole 169.253.160.0/19
ip route add blackhole 169.253.0.0/16
ip route add blackhole 169.252.128.0/17
ip route add blackhole 169.252.0.0/16
ip route add blackhole 169.253.162.0/24
ip route add blackhole 169.252.0.0/17
ip route add blackhole 169.253.172.0/22