ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 168.90.250.0/23
ipset -A myBlackhole-4 168.90.248.0/24
ipset -A myBlackhole-6 2804:2db4::/32
ipset -A myBlackhole-4 168.90.250.0/24
ipset -A myBlackhole-4 168.90.251.0/24
ipset -A myBlackhole-4 168.90.248.0/23
ipset -A myBlackhole-4 168.90.249.0/24
ipset -A myBlackhole-4 168.90.248.0/22
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP