RFC1918规定的的私有地址空间
10.0.0.0 - 10.255.255.255 (10/8 prefix) 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
rfc1918:https://datatracker.ietf.org/doc/rfc1918/