ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 195.2.246.0/23
ipset -A myBlackhole-4 194.117.230.0/23
ipset -A myBlackhole-4 89.32.216.0/21
ipset -A myBlackhole-4 188.210.224.0/21
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP