ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 91.102.48.0/21
ipset -A myBlackhole-6 2a01:6a0::/32
ipset -A myBlackhole-4 62.48.32.0/19
ipset -A myBlackhole-4 178.237.0.0/20
iptables -A INPUT -m set --match-set myBlackhole-4 src -j DROP
ip6tables -A INPUT -m set --match-set myBlackhole-6 src -j DROP