No Internet after change to Gateway Local IP address - Time Warner Internet

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This question is about "No Internet after change to Gateway Local IP address", with Time Warner Cable internet and apps. I need to change the Local IP Configuration on my TC8717T gateway. (This is at my employer's request, to solve a perceived problem on the other end of a VPN connection.)



I changed from 192.168.0 to 192.168.11.



After restarting the gateway, all devices in the house could connect to the gateway, but none of them had Internet access, whether via hard wire or Wi-Fi.



Any ideas why changing the IP address of the gateway would block access to the Internet?

No Internet after change to Gateway Local IP address?
 
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