Renumber gw-cnx-1 to the fleet addressing scheme (OPNsense replacement)

The newedge.house site adopts the 10.1.<vlanId>.0/24 convention: mgmt 10
(the old untagged LAN), lan 20, iot 40, voip 50, dmz 60, unit1-5 110-150.
PPPoE is untagged at this site. Static leases move to a new per-VLAN
dhcp.reservations option rendered into Kea host reservations.

docs/src/gateways.md

@@ -42,9 +42,13 @@ should also shorten `dhcp.leaseTime` (default 86400 s) so the pool recycles.
 First user: `gw-cnx-2` (site 2) runs the public WiFi — guest VLAN 30 at
 `10.2.128.0/22`, pool `10.2.128.100 – 10.2.131.250`, `dhcp.leaseTime = 3600`.
 
-| Site | siteId | mgmt           | lan            |
+| Site | siteId | mgmt           | lan            | site-specific VLANs                                             |
-| ---- | ------ | -------------- | -------------- |
+| ---- | ------ | -------------- | -------------- | --------------------------------------------------------------- |
-| cnx  | 1      | `10.1.10.0/24` | `10.1.20.0/24` |
+| cnx  | 1      | `10.1.10.0/24` | `10.1.20.0/24` | iot 40, voip 50, dmz 60, unit1–5 110/120/130/140/150 (all /24s) |
+
+Static DHCP leases are declared per VLAN via `dhcp.reservations` (attribute
+name = hostname, plus `hwAddress`/`ipAddress`); park them outside the pool,
+in the `.2–.99` infra range or `.200–.254`.
 
 Trust model: mgmt → everything; other VLANs → router DNS/DHCP + internet only
 (no inter-VLAN); WAN → nothing inbound; mesh → SSH, metrics, Omada UI.

machines/gw-cnx-1/configuration.nix

@@ -25,15 +25,38 @@
     site = "cnx";
     siteId = 1;
     wan.interface = "enp1s0";
-    wan.vlanId = 10; # AIS delivers PPPoE tagged on VLAN 10
+    wan.vlanId = null; # this ISP runs PPPoE untagged on the port
     trunkPorts = [
       "enp2s0"
       "enp3s0"
       "enp4s0"
     ];
+    # Replaces the newedge.house OPNsense box; renumbered to the fleet
+    # convention (10.1.<vlanId>.0/24, router .1, pool .100-.199). The old
+    # untagged LAN becomes tagged mgmt — infra switch ports get PVID 10.
     vlans = {
-      mgmt.id = 10; # 10.1.10.0/24 — APs, switches, Omada, admin
+      mgmt = {
+        id = 10; # 10.1.10.0/24 — servers, APs, switches, Omada, admin
+        dhcp.reservations.storinator01 = {
+          hwAddress = "7c:c2:55:e0:d6:40";
+          ipAddress = "10.1.10.53";
+        };
+      };
       lan.id = 20; # 10.1.20.0/24 — trusted clients
+      iot.id = 40; # 10.1.40.0/24
+      voip.id = 50; # 10.1.50.0/24
+      dmz.id = 60; # 10.1.60.0/24
+      unit1.id = 110; # 10.1.110.0/24
+      unit2.id = 120; # 10.1.120.0/24
+      unit3.id = 130; # 10.1.130.0/24
+      unit4.id = 140; # 10.1.140.0/24
+      unit5 = {
+        id = 150; # 10.1.150.0/24
+        dhcp.reservations.newt = {
+          hwAddress = "7c:d3:0a:21:58:0b";
+          ipAddress = "10.1.150.22";
+        };
+      };
     };
     # This site runs the Omada controller for its APs/switches.
     omada.enable = true;

modules/router/default.nix

@@ -68,6 +68,25 @@ let
               e.g. public-WiFi guest VLANs (3600-7200), so the pool recycles.
             '';
           };
+          reservations = lib.mkOption {
+            type = lib.types.attrsOf (
+              lib.types.submodule {
+                options = {
+                  hwAddress = lib.mkOption {
+                    type = lib.types.str;
+                    example = "aa:bb:cc:dd:ee:ff";
+                    description = "Client MAC address.";
+                  };
+                  ipAddress = lib.mkOption {
+                    type = lib.types.str;
+                    description = "Fixed address handed to this client (inside the VLAN's subnet, outside the pool).";
+                  };
+                };
+              }
+            );
+            default = { };
+            description = "Static DHCP leases; the attribute name becomes the client's hostname.";
+          };
         };
         allowWan = lib.mkOption {
           type = lib.types.bool;

modules/router/dns-dhcp.nix

@@ -29,6 +29,11 @@ in
           interface = "vlan-${name}";
           valid-lifetime = vlan.dhcp.leaseTime;
           pools = [ { pool = "${vlan.dhcp.pool.from} - ${vlan.dhcp.pool.to}"; } ];
+          reservations = lib.mapAttrsToList (host: res: {
+            hostname = host;
+            hw-address = res.hwAddress;
+            ip-address = res.ipAddress;
+          }) vlan.dhcp.reservations;
           option-data = [
             {
               name = "routers";