@schoen Yes, it is the router! The router have a section check to activate the IPv6.
| Type | Value |
|---|---|
| IPv6 Internet Address | 2001:xxx |
| IPv6 Default Gateway | fe80::216:4 |
| IPv6 Delegated Prefix | 2600:xxx::/60 |
I can turn the IPv6 off, but my whole purpose was to make this work! It just defeat my whole purpose. Uh!