# IPv6 Configuration

IPv6 is enabled by default. Stateless address autoconfiguration is used to automatically assign IPv6 addresses to all interfaces. You can disable IPv6 support globally by setting:

     = false;

You can disable IPv6 on a single interface using a normal sysctl (in this example, we use interface `eth0`):

    ."net.ipv6.conf.eth0.disable_ipv6" = true;

As with IPv4 networking interfaces are automatically configured via DHCPv6. You can configure an interface manually:

    networking.interfaces.eth0.ipv6.addresses = [ {
      address = "fe00:aa:bb:cc::2";
      prefixLength = 64;
    } ];

For configuring a gateway, optionally with explicitly specified interface:

     = {
      address = "fe00::1";
      interface = "enp0s3";
    };

See for similar examples and additional information.