@GeorgeDecoBE63 

First please access the Deco web UI by entering "tplinkdeco.net" in your browser. Navigate to Advanced > System > System Log, select "ALL" in the log type, and save the file to your local computer. Then follow the steps below making sure to attach the logs to the email.

I recommend sending an email to forumsupport.usa@tp-link.com with the following information:

Subject: [Forum Escalation][ID 864494] Windows 11 not defaulting to IP6

Forum Nickname: [User Provided]

Thread URL: https://community.tp-link.com/us/home/forum/topic/864494?moduleId=2424

Model&Version: [User Provided]

Description: [User Provided]

Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]

In the template above please fill in the areas that say [User Provided].  This will open a case with our engineering team, and they will work with you via email. 

  @GeorgeDecoBE63 

Hi, 
If you have sent an email to forumsupport.usa@tp-link.com but have not received a reply, please update here with the email reference number(e.g., TKIDXXXX) after submitting the email. I'll forward the information to the relevant team to follow up on your case.

You can also provide pictures of the test results for the following steps, and we will see if there are any other suggestions for your case. 
(You can upload the pictures to your cloud server (such as Google Drive) or YouTube, generate a download link, and send it to me (@Solla-topee) via a private message.)
  1. Connect your laptop to the Deco network and go to the command page.
  2. Try to ping the yahoo address,  type nslookup www.yahoo.com, and send us the test results.
  3. Type curl -6 http://ip.sb and send us the test results.
  4. Send us the screenshots of the Deco app > More > Internet Connection > IPv4 and IPv6 pages.

Best Regards