fedora-csb-system-manager
 1_: {
 2  boot = {
 3    initrd.systemd.enable = true;
 4
 5    kernel.sysctl = {
 6      "net.ipv4.ip_forward" = 1;
 7      "net.ipv6.conf.all.forwarding" = 1;
 8    };
 9
10    loader = {
11      systemd-boot.enable = true;
12      efi.canTouchEfiVariables = true;
13      timeout = 1;
14    };
15  };
16}