networking = {
  interfaces = {
    eth0.ipv6.addresses = [{
      address = "2a01:4f8:c17:345f::1";
      prefixLength = 64;
    }];
  };
  defaultGateway6 = {
    address = "fe80::1";
    interface = "eth0";
  };
  nameservers = [ "2a00:1098:2b::1" "2a00:1098:2c::1" "2a01:4f9:c010:3f02::1"];
};