Private addresses make it easier to reconfigure networks. For instance, changing the IP address scheme of a LAN does not affect external connections, as long as the NAT (Network Address Translation) settings are updated accordingly.
Look for . That series of numbers is your router’s actual address. Click the Apple Icon > System Settings > Network . 192.168.1.100.1
192.168.1.100.1 Status: Invalid Format
They help conserve global IP address space, which was a significant concern with the rapid growth of the Internet. The introduction of IPv6 later addressed this concern more comprehensively, but the use of private addresses remains a practical solution. Private addresses make it easier to reconfigure networks