ipset -N myBlackhole-4 hash:net family inet
ipset -N myBlackhole-6 hash:net family inet6
ipset -A myBlackhole-4 139.26.8.0/21
ipset -A myBlackhole-4 139.26.0.0/21
ipset -A myBlackhole-4 139.26.16.0/21
ipset -A myBlackhole-4 139.26.24.0/21
ipset -A myBlackhole-4 139.26.0.0/17
ipset -A myBlackhole-6 2c0f:3781::/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