ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 173.0.175.0/24
ipset -A myBlackhole-4 94.143.248.0/21
ipset -A myBlackhole-6 2a02:23a8::/32
ipset -A myBlackhole-4 203.83.203.0/24
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP