diff --git a/main.tf b/main.tf
index dd15196..2b17a72 100644
--- a/main.tf
+++ b/main.tf
@@ -29,7 +29,7 @@ resource "libvirt_cloudinit_disk" "cloudinit" {
   name           = "${var.name}.iso"
   pool           = "init"
   user_data      = templatefile("cloud_init.cfg.tftpl", { name = var.name, host_public_key = var.host_public_key })
-  network_config = templatefile("network_config.cfg.tftpl", {})
+  network_config = templatefile("network_config.cfg.tftpl", { internal_ip = var.internal_ip})
 }
 
 resource "libvirt_domain" "ubuntu" {
@@ -44,13 +44,13 @@ resource "libvirt_domain" "ubuntu" {
   network_interface {
     network_name = "dmzbr"
     hostname     = var.name
-    addresses    = ["192.168.30.7/24"]
+    addresses    = ["${var.internal_ip}/24"]
     mac          = "ca:fe:c0:ff:ee:07"
   }
 
   cloudinit = libvirt_cloudinit_disk.cloudinit.id
 
   provisioner "local-exec" {
-    command = "ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -T 60 -u root -i '192.168.30.7,' ansible.yml"
+    command = "ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -T 60 -u root -i '${var.internal_ip}' ansible.yml"
   }
 }
diff --git a/network_config.cfg.tftpl b/network_config.cfg.tftpl
index 62fb8d4..762f752 100644
--- a/network_config.cfg.tftpl
+++ b/network_config.cfg.tftpl
@@ -3,7 +3,7 @@ ethernets:
   ens3:
     dhcp4: false
     addresses:
-      - "192.168.30.7/24"
+      - "${internal_ip}/24"
     routes:
       - to: 0.0.0.0/0
         via: 192.168.30.1
diff --git a/variables.tf b/variables.tf
index 6be2cc2..a603e43 100644
--- a/variables.tf
+++ b/variables.tf
@@ -11,3 +11,7 @@ variable "host_public_key" {
   type = string
   default = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOodpLr+FDRyKyHjucHizNLVFHZ5AQmE9GmxMnOsSoaw pimkunis@thinkpadpim"
 }
+
+variable "internal_ip" {
+  default = "192.168.30.7"
+}