Bogon filter in use on our gateway (all packets with these source addresses are dropped):
# ipset list Bogons
Name: Bogons
Type: hash:net
Header: family inet hashsize 1024 maxelem 65536
Size in memory: 17208
References: 6
Members:
10.0.0.0/8
169.254.0.0/16
172.16.0.0/12
198.51.100.0/24
127.0.0.0/8
192.0.2.0/24
213.222.29.194
224.0.0.0/4
100.64.0.0/10
203.0.113.0/24
240.0.0.0/4
0.0.0.0/8
192.168.0.0/16
44.128.0.0/16