diff --git a/deployment/check/common/data-model.nix b/deployment/check/common/data-model.nix
index 08442b0a..e32e6083 100644
--- a/deployment/check/common/data-model.nix
+++ b/deployment/check/common/data-model.nix
@@ -28,6 +28,8 @@ let
     proxmox-user
     proxmox-password
     node-name
+    bridge
+    vlanId
     ;
   inherit (lib) mkOption types;
   eval =
@@ -340,6 +342,8 @@ let
                       proxmox-user
                       proxmox-password
                       node-name
+                      bridge
+                      vlanId
                       ;
                     root-path = pathToRoot;
                   };
diff --git a/deployment/check/data-model-tf-proxmox/nixosTest.nix b/deployment/check/data-model-tf-proxmox/nixosTest.nix
index 337efcd6..503e02f0 100644
--- a/deployment/check/data-model-tf-proxmox/nixosTest.nix
+++ b/deployment/check/data-model-tf-proxmox/nixosTest.nix
@@ -23,6 +23,8 @@ let
     proxmox-user = "root@pam";
     proxmox-password = "mytestpw";
     node-name = "pve";
+    bridge = "br0";
+    vlanId = 0;
   };
   # FIXME generate the image `nixos-generate` was to make, but now do it for a desired `-c configuration.nix` rather than whatever generic thing now
   deployment =
diff --git a/deployment/check/data-model-tf/options.nix b/deployment/check/data-model-tf/options.nix
index 035cb047..8100c8c4 100644
--- a/deployment/check/data-model-tf/options.nix
+++ b/deployment/check/data-model-tf/options.nix
@@ -34,5 +34,15 @@ in
       description = "the name of the ProxmoX node to use.";
       type = types.str;
     };
+    bridge = mkOption {
+      description = "The name of the network bridge (defaults to vmbr0).";
+      type = types.str;
+      default = "vmbr0";
+    };
+    vlanId = mkOption {
+      description = "The VLAN identifier.";
+      type = types.int;
+      default = 0;
+    };
   };
 }
diff --git a/deployment/data-model.nix b/deployment/data-model.nix
index 745f3530..4a5369b7 100644
--- a/deployment/data-model.nix
+++ b/deployment/data-model.nix
@@ -354,6 +354,16 @@ let
               description = "environment variables to configure the TF HTTP back-end, see <https://developer.hashicorp.com/terraform/language/backend/http#configuration-variables>";
               type = types.attrsOf (types.either types.str types.int);
             };
+            bridge = mkOption {
+              description = "The name of the network bridge (defaults to vmbr0).";
+              type = types.str;
+              default = "vmbr0";
+            };
+            vlanId = mkOption {
+              description = "The VLAN identifier.";
+              type = types.int;
+              default = 0;
+            };
             run = mkOption {
               type = types.package;
               # error: The option `tf-deployment.tf-host.run' is read-only, but it's set multiple times.
@@ -371,6 +381,8 @@ let
                     proxmox-user
                     proxmox-password
                     node-name
+                    bridge
+                    vlanId
                     ;
                   inherit (ssh)
                     host
@@ -432,11 +444,13 @@ let
                     inherit
                       host
                       nixos_conf
+                      bridge
                       ;
+                    node_name = node-name;
                     proxmox_user = proxmox-user;
                     proxmox_password = proxmox-password;
                     ssh_user = username;
-                    node_name = node-name;
+                    vlan_id = vlanId;
                   };
                   tf-env = pkgs.callPackage ./run/tf-env.nix {
                     inherit httpBackend;
diff --git a/deployment/run/tf-proxmox/main.tf b/deployment/run/tf-proxmox/main.tf
index 7bcca46b..e1e4ca4d 100644
--- a/deployment/run/tf-proxmox/main.tf
+++ b/deployment/run/tf-proxmox/main.tf
@@ -161,8 +161,8 @@ resource "proxmox_virtual_environment_vm" "nix_vm" {
 
   network_device {
     model        = "virtio"
-    bridge       = "ovsbr0"
-    vlan_id      = 1305
+    bridge       = var.bridge
+    vlan_id      = var.vlan_id
   }
 
   operating_system {
diff --git a/deployment/run/tf-proxmox/variables.tf b/deployment/run/tf-proxmox/variables.tf
index 0c940574..18beeab2 100644
--- a/deployment/run/tf-proxmox/variables.tf
+++ b/deployment/run/tf-proxmox/variables.tf
@@ -51,6 +51,18 @@ variable "image" {
   type = string
 }
 
+variable "bridge" {
+  description = "The name of the network bridge (defaults to vmbr0)."
+  type = string
+  default = "vmbr0"
+}
+
+variable "vlan_id" {
+  description = "The VLAN identifier."
+  type = number
+  default = 0
+}
+
 #########################################
 
 variable "category" {