Xbox series x not connecting to network

[#1]

Xbox tries to connect using multiple Ip addresses at the same time but router admin page shows it connected as static ip address which seems to change by itself. I've tried everything to fix this problem. Has anyone any ideas on a fix

[#2]

Is the router showing more than one IP address because the Xbox is connecting by ethernet AND WiFi ?

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[#3]

Xbox is connected by ethernet cable and is showing wired connection. Plusnet advisor sent list of ip addresses it was trying to use. The xbox itself kept flashing up different addresses. Router management page showed static ip address.

[#4]

Moderator's note:
Thread moved from Full Fibre to My Router

[#5]

what is the problem you're actually trying to address here?

[#6]

Xbox shown as connected using wired connection but will not connect to network. Router management page shows ip address as static, but xbox tries to connect using multiple ip addresses. Sometimes static ip address will change. Will only connect if router is restarted. Has anyone had the same problem and know of any fix.