net

modules/nixos/network/default.nix

@@ -49,8 +49,35 @@ let
             psk = profile.psk;
           };
         };
+
+      userProfiles = mapAttrs' make cfg.networkmanager.profiles;
+
+      # When using manual IP with NM enabled, auto-generate an ethernet profile
+      # so NM actually assigns the static address (not just DHCP).
+      ethernetProfile =
+        optionalAttrs (cfg.ipv4.method == "manual" && cfg.ipv4.interface != "" && cfg.networkmanager.enable)
+          {
+            "static-${cfg.ipv4.interface}" = {
+              connection = {
+                id = "static-${cfg.ipv4.interface}";
+                type = "ethernet";
+                autoconnect = true;
+                interface-name = cfg.ipv4.interface;
+              };
+              ipv4 = {
+                method = "manual";
+                address = cfg.ipv4.address;
+                gateway = cfg.ipv4.gateway;
+                dns = cfg.ipv4.dns;
+              };
+              ipv6 = {
+                addr-gen-mode = "stable-privacy";
+                method = "auto";
+              };
+            };
+          };
     in
-    mapAttrs' make cfg.networkmanager.profiles;
+    userProfiles // ethernetProfile;
 in
 {
   imports = [
@@ -173,8 +200,8 @@ in
           networkmanager-vpnc
         ];
 
-        # Configure WiFi profiles if any are defined
-        ensureProfiles = mkIf (cfg.networkmanager.profiles != { }) {
+        # Configure profiles if any are defined
+        ensureProfiles = mkIf (profiles != { }) {
           environmentFiles = lib.optional (config.sops.secrets ? wifi) config.sops.secrets.wifi.path;
           profiles = profiles;
         };