ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 119.235.255.0/24
ipset -A myBlackhole-4 119.235.250.0/24
ipset -A myBlackhole-4 119.235.253.0/24
ipset -A myBlackhole-4 119.235.251.0/24
ipset -A myBlackhole-4 119.235.248.0/24
ipset -A myBlackhole-4 119.235.249.0/24
ipset -A myBlackhole-4 119.235.254.0/24
ipset -A myBlackhole-4 119.235.252.0/24
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP