{
  gandi = {
    dns = {
      # https://docs.gandi.net/fr/noms_domaine/utilisateurs_avances/nameserver_secondaire.html
      secondary = {
        transfer = {
          ipv4 = "217.70.177.40";
          ipv6 = "2001:4b98:d:1::40";
        };
        ns = {
          name = "ns6.gandi.net";
          ipv4 = "217.70.177.42";
          ipv6 = "2001:4b98:d:1::4b";
        };
      };
    };
  };
  lebureau = {
    dns = {
      secondary = {
        transfer = {
          ipv4 = [ "45.13.107.8" "78.196.218.87" ];
          ipv6 = [ "2a0e:e701:1010::1" "2a01:e34:ec4d:a570::2" ];
        };
      };
    };
  };
}