ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 173.230.240.0/20
ipset -A myBlackhole-4 162.247.76.0/22
ipset -A myBlackhole-4 207.45.176.0/20
ipset -A myBlackhole-4 68.171.208.0/20
ipset -A myBlackhole-4 192.64.32.0/22
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP