ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 204.153.12.0/22
ipset -A myBlackhole-4 138.3.200.0/24
ipset -A myBlackhole-4 148.87.0.0/18
ipset -A myBlackhole-6 2606:b400:8301::/48
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP