From 7ef9ee727b0cb82a0ec9a390943146bb3d7f8db1 Mon Sep 17 00:00:00 2001
From: Christoph Cullmann <cullmann@kde.org>
Date: Sat, 10 Jun 2023 17:42:28 +0200
Subject: use systemd-networkd

---
 common.nix             | 16 ++++++++++++++--
 mini/configuration.nix |  3 +++
 neko/configuration.nix |  3 +++
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/common.nix b/common.nix
index 58b0199..107b84e 100644
--- a/common.nix
+++ b/common.nix
@@ -62,11 +62,23 @@ in
   # allow all firmware
   hardware.enableAllFirmware = true;
 
-  # networking just with the dhcp client
-  networking.useDHCP = true;
+  # use systemd-networkd
+  networking.useDHCP = false;
+  systemd.network.enable = true;
+   systemd.network.networks."10-wan" = {
+    networkConfig = {
+      # start a DHCP Client for IPv4 Addressing/Routing
+      DHCP = "ipv4";
+      # accept Router Advertisements for Stateless IPv6 Autoconfiguraton (SLAAC)
+      IPv6AcceptRA = true;
+    };
+    # make routing on this interface a dependency for network-online.target
+    linkConfig.RequiredForOnline = "routable";
+  };
 
   # ensure firewall is up, allow ssh and http in
   networking.firewall.enable = true;
+  networking.firewall.allowedTCPPorts = [ 22 ];
   networking.firewall.logRefusedConnections = false;
 
   # OpenSSH daemon config
diff --git a/mini/configuration.nix b/mini/configuration.nix
index 70165b1..cf45190 100644
--- a/mini/configuration.nix
+++ b/mini/configuration.nix
@@ -16,4 +16,7 @@
 
   # host name
   networking.hostName = "mini";
+
+  # main network interface
+  systemd.network.networks."10-wan".matchConfig.Name = "eno1";
 }
diff --git a/neko/configuration.nix b/neko/configuration.nix
index 7b8f3e8..487e5a3 100644
--- a/neko/configuration.nix
+++ b/neko/configuration.nix
@@ -16,4 +16,7 @@
 
   # host name
   networking.hostName = "neko";
+
+  # main network interface
+  systemd.network.networks."10-wan".matchConfig.Name = "enp9s0";
 }
-- 
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