From 0aeae6ffcd682696883713a13c8237b152fcec7d Mon Sep 17 00:00:00 2001
From: Steffen <steffen.illium@gmail.com>
Date: Sun, 18 Jan 2026 17:12:40 +0100
Subject: [PATCH] ipv6 stack enabled

---
 configuration.nix | 76 +++++++++++++++++++++++------------------------
 1 file changed, 38 insertions(+), 38 deletions(-)

diff --git a/configuration.nix b/configuration.nix
index 4e5b245..43f0ad6 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -1,7 +1,3 @@
-# Edit this configuration file to define what should be installed on
-# your system. Help is available in the configuration.nix(5) man page, on
-# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
-
 { config, lib, pkgs, ... }:
 
 {
@@ -31,53 +27,63 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
-  # Enable IP forwarding for NAT (used in wireguard.nix) and load specific modules.
+  # --- KERNEL NETWORK CONFIGURATION ---
+  # CRITICAL FOR DOCKER + IPV6
+  # 1. Enable Forwarding (Required for Docker)
+  # 2. Force Accept RA = 2 (Required to get IPv6 address even if forwarding is on)
   boot.kernel.sysctl = {
     "net.ipv4.ip_forward" = 1;
     "net.ipv6.conf.all.forwarding" = 1;
-  };
+    "net.ipv6.conf.all.accept_ra" = 2;
+    "net.ipv6.conf.default.accept_ra" = 2;
+    "net.ipv6.conf.${lib.head config.vars.interfaces}.accept_ra" = 2;
+ };
+  
   boot.kernelModules = [ "rbd" "nbd" ];
   
   hardware.bluetooth.enable = true;
   hardware.bluetooth.settings = {
-	General = {
-		Experimental = true;
-	};
+        General = {
+                Experimental = true;
+        };
   };
 
-
-  networking.hostName = config.vars.hostname;
-  networking.hostId = config.vars.hostid;
   networking = {
+    hostName = config.vars.hostname;
+    hostId = config.vars.hostid;
+    
+    # Enable IPv6 Stack
+    enableIPv6 = true;
+
     interfaces = let
       primaryInterface = lib.head config.vars.interfaces;
       secondaryInterfaces = lib.tail config.vars.interfaces;
     in
     lib.foldr (name: acc: acc // {
+      # Secondary interfaces can keep using DHCP
       ${name}.useDHCP = true;
     }) (
-      { ${primaryInterface}.ipv4.addresses = [{
-          address = config.vars.local_ip;
-          prefixLength = 24;
-        }];
+      { ${primaryInterface} = {
+          # PRIMARY INTERFACE: STATIC IPV4 ONLY
+          ipv4.addresses = [{
+            address = config.vars.local_ip;
+            prefixLength = 24;
+          }];
+          
+        };
       }
     ) secondaryInterfaces;
-  };
 
-  networking.defaultGateway = {
-    address = "192.168.178.1";
-    interface = lib.head config.vars.interfaces; # Sticking with the primary interface
+    defaultGateway = {
+      address = "192.168.178.1";
+      interface = lib.head config.vars.interfaces;
+    };
+    nameservers = [ "192.168.178.10" "9.9.9.9" ];
   };
-  networking.nameservers = [ "192.168.178.10" "9.9.9.9" ];
 
 
   # Set your time zone.
   time.timeZone = "Europe/Berlin";
-  # services.localtimed.enable = true;
-
-  # Configure network proxy if necessary
-  # networking.proxy.default = "http://user:password@proxy:port/";
-  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
 
   # Enable the X11 windowing system.
   services.xserver.enable = false; 
@@ -98,8 +104,7 @@
   # Allow unfree software and packages
   nixpkgs.config.allowUnfree = true;
 
-  # List packages installed in system profile. To search, run:
-  # $ nix search wget
+  # List packages installed in system profile.
   environment.systemPackages = with pkgs; [
     wget
     htop
@@ -111,19 +116,14 @@
     fzf
   ];
 
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
+  # Firewall settings
+  # Your firewall is DISABLED, so we don't need to manually add allowedUDPPorts for DHCPv6.
   networking.firewall.enable = false;
 
-  # Copy the NixOS configuration file and link it from the resulting system
-  # (/run/current-system/configuration.nix). This is useful in case you
-  # accidentally delete configuration.nix.
+  # Copy the NixOS configuration file
   system.copySystemConfiguration = true;
 
   # DO NOT TOUCH!!!!!!!!!!!!!!!!!!!!!!!!!!
-  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
-  system.stateVersion = config.vars.stateVersion; # Set via host-specific vars.nix
- # DO NOT TOUCH!!!!!!!!!!!!!!!!!!!!!!!!!!
+  system.stateVersion = config.vars.stateVersion; 
+  # DO NOT TOUCH!!!!!!!!!!!!!!!!!!!!!!!!!!
 }