Avoid client changes on the switch routing

[fernando_fl_rez]

Hello, so today as part of my learning I tried to connect a wi-fi router to my network. After a little while all the vlan was down. Looked into the running config and saw that the port had an ip assigned and also a route was placed for 0.0.0.0/0 which madr my other pcs to stop having internet access.

Is there a way to avoid this?

Thank you!