:navigation-title: FAQ .. include:: /Includes.rst.txt .. _faq: === FAQ === .. _faq-ipv6: Is this extension IPv6 compatible? ================================== Yes, it is. It uses the :php:`GeneralUtility::cmpIP()` method, which can validate both IPv4 and IPv6 addresses. .. _faq-logout: What about "Logout"? ==================== Ah yeah, that is funny. Visitors with a matching IP address are authenticated on every single request. You cannot log out: if you press "Logout" the page reloads, a new request is made, and you are logged in again right away. .. _faq-multiple-ip-addresses: Can I configure more than one IP address per fe_user? ===================================================== Yes. Add as many entries as you like to the `IP addresses` field of a `fe_users` record. The visitor is logged in automatically if their remote address matches **any one** of them.