ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 67.211.176.0/20
ipset -A myBlackhole-4 206.217.16.0/20
ipset -A myBlackhole-4 69.24.208.0/20
ipset -A myBlackhole-6 2606:3700::/32
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP