ZyXEL Communications NWD-211AN User Manual page 80

Appendix B IP Addresses and Subnetting
Conflicting Computer and Router IP Addresses Example
More than one device can not use the same IP address. In the following example,
the computer and the router's LAN port both use 192.168.1.1 as the IP address.
The computer cannot access the Internet. This problem can be solved by
assigning a different IP address to the computer or the router's LAN port.
Figure 27 Conflicting Computer and Router IP Addresses Example
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NWD-211AN User's Guide