ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 186.251.212.0/24
ipset -A myBlackhole-4 186.251.213.0/24
ipset -A myBlackhole-4 186.251.209.0/24
ipset -A myBlackhole-4 186.251.210.0/24
ipset -A myBlackhole-4 186.251.208.0/24
ipset -A myBlackhole-4 186.251.214.0/24
ipset -A myBlackhole-4 186.251.211.0/24
ipset -A myBlackhole-4 186.251.215.0/24
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP