ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 123.0.16.0/20
ipset -A myBlackhole-4 123.0.22.0/24
ipset -A myBlackhole-4 123.0.21.0/24
ipset -A myBlackhole-4 123.0.16.0/24
ipset -A myBlackhole-4 123.0.27.0/24
ipset -A myBlackhole-4 123.0.31.0/24
ipset -A myBlackhole-4 123.0.17.0/24
ipset -A myBlackhole-4 123.0.26.0/24
ipset -A myBlackhole-4 123.0.19.0/24
ipset -A myBlackhole-4 123.0.24.0/24
ipset -A myBlackhole-4 123.0.20.0/24
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP