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Knowledge document #573

Configuring IPv6 in the FRITZ!Box

The FRITZ!Box supports the internet protocols IPv4 and IPv6 and can establish native IPv4 and IPv6 internet connections as well as Dual-Stack and Dual-Stack Lite internet connections (DS-Lite), which allow simultaneous use of IPv4 and IPv6. In addition, the FRITZ!Box supports IPv6 with tunnel protocols, in case the internet service provider does not support IPv6 connections.

To use IPv6, you must configure this new internet protocol in both the FRITZ!Box and the computers, smartphones, and other devices connected to it. IPv6 is then used in parallel to IPv4 and given priority by modern devices.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Setting up an IPv6 connection in the FRITZ!Box

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. Click on the "IPv6" tab. If the tab is not displayed, enable the Advanced View first.
  4. Enable the option "IPv6 support enabled".
  5. Set up the desired IPv6 connection. You can find detailed information on the individual options in the FRITZ!Box's online help, which you can access by clicking the symbol (Help).
  6. Click "Apply" to save the settings.

2 Adjusting the IPv6 settings for the home network

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Network" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click the "IPv6 Addresses" button. If the button is not displayed, enable the Advanced View first.
  5. Enable the option "Assign unique local addresses (ULA) as long as no IPv6 connection exists (recommended)".
  6. Enable the options "Enable DHCPv6 server in the FRITZ!Box for the home network" and "Only assign DNS server".
  7. Click "OK" to save the settings and on the FRITZ!Box, confirm that the procedure may be executed if asked to do so.

3 Configuring IPv6 in the network device

IPv6 is enabled by default in Android, iOS, macOS, Windows, and other modern operating systems; it is used parallel to IPv4 and preferred by modern devices. We recommend the following settings for IPv6 communication with the FRITZ!Box:

Windows 11

  1. Click (Start) and then (Settings) in the Windows task bar.
  2. Click "Network & Internet" in the "Settings" menu.
  3. Click "Advanced network settings".
  4. Click "More network adapter options" in the section "Related settings".
  5. Right-click the network adapter that connects the computer to the FRITZ!Box.
  6. Click "Properties".
  7. Select "Internet Protocol Version 6 (TCP/IPv6)".
  8. Click "Properties".
  9. Enable the options "Obtain an IPv6 address automatically" and "Obtain DNS server address automatically".
  10. Click "OK" to save the settings.

Windows 10

  1. Click (Start) and then (Settings) in the Windows task bar.
  2. Click "Network & Internet" in the "Settings" menu.
  3. Click "Change adapter options" in the section "Change your networking settings".
  4. Click the arrow next to the (Change view) button in the menu bar and select "Details".
  5. Right-click the LAN or Wi-Fi connection that lists the network adapter that connects the computer to the FRITZ!Box under "Device Name".
  6. Click "Properties".
  7. Select "Internet Protocol Version 6 (TCP/IPv6)".
  8. Click "Properties".
  9. Enable the options "Obtain an IPv6 address automatically" and "Obtain DNS server address automatically".
  10. Click "OK" to save the settings.

macOS

  1. Open the "System Preferences" in the Apple menu.
  2. Click on "Network" in the "System Preferences" menu.
  3. If the computer is connected to the FRITZ!Box via Wi-Fi, select "Wi-Fi" in the left-hand window.
    • If the computer is connected to the FRITZ!Box using a network cable, select "Built-in Ethernet" in the left-hand window.
  4. Click "Advanced".
  5. Switch to the TCP/IP settings page and select "Using DHCP:" from the drop-down list "Configure IPv4". Select the option "Automatically" from the drop-down list "Configure IPv6".
  6. Click "OK" to save the settings.

Linux and other devices (for example NAS systems)

  1. Configure the device to automatically obtain an IPv6 address and a DNSv6 server via SLAAC und DHCPv6. Refer to the manufacturer for information on how to set it up, for example consult the manual.
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