ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 162.244.244.0/22
ipset -A myBlackhole-4 142.0.48.0/20
ipset -A myBlackhole-4 74.112.208.0/21
ipset -A myBlackhole-4 199.193.80.0/22
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP