DNSv6 in use, despite it beeing disabled.

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:wink:

C:\>netsh interface ipv6 delete dnsservers ?

Usage: delete dnsservers [name=]<string> [[address=]<IPv6 address>|all] [[validate=]yes|no]

Parameters:

      Tag            Value
      name         - The name or index of the interface where DNS
                     servers are deleted.
      address      - One of the following values:
                     <IPv6 address>: A specific IPv6 address of a DNS server
                                   you are deleting.
                     all: Deletes all configured IPv6 addresses for DNS
                                   servers.
      validate     - Specifies whether validation of the DNS server setting
                     will be performed. The value is yes by default.

Remarks: Deletes statically configured DNS server IPv6 addresses for a
         specific interface. If Validate switch is yes, then the remaining
         DNS servers are validated.

Examples:

       delete dnsservers "Wired Ethernet Connection" fec0:0:0:ffff::1
       delete dnsservers "Wired Ethernet Connection" all

EDIT: You most likely need to run the CMD/shell prompt with Administrative powers!

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