ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 69.74.235.0/24
ipset -A myBlackhole-4 148.77.22.0/24
ipset -A myBlackhole-4 65.198.87.0/24
ipset -A myBlackhole-4 65.217.232.0/24
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP