ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 181.214.73.0/24
ipset -A myBlackhole-4 68.69.124.0/22
ipset -A myBlackhole-4 104.233.32.0/20
ipset -A myBlackhole-4 167.253.128.0/22
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP