ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 187.120.200.0/21
ipset -A myBlackhole-4 187.120.200.0/24
ipset -A myBlackhole-4 187.120.192.0/20
ipset -A myBlackhole-4 187.120.197.0/24
ipset -A myBlackhole-4 187.120.204.0/24
ipset -A myBlackhole-4 187.120.198.0/24
ipset -A myBlackhole-4 187.120.195.0/24
ipset -A myBlackhole-4 187.120.199.0/24
ipset -A myBlackhole-4 187.120.192.0/21
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP