nixos-config/services/tailscale.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.my.services.tailscale;
in
{
options.my.services.tailscale = {
enable = lib.mkEnableOption "Tailscale";
# NOTE: still have to do `tailscale up --advertise-exit-node`
exitNode = lib.mkEnableOption "Use as exit node";
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};
config = mkIf cfg.enable {
services.tailscale = {
enable = true;
package = pkgs.tailscale;
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};
networking.firewall = {
trustedInterfaces = [ "tailscale0" ];
allowedUDPPorts = [ config.services.tailscale.port ];
};
# enable IP forwarding to use as exit node
boot.kernel.sysctl = mkIf cfg.exitNode {
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"net.ipv6.conf.all.forwarding" = true;
"net.ipv4.ip_forward" = true;
};
};
}