diff --git a/README.md b/README.md
index cecf0bd..c6dde3a 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ EOF
 Apply the terraform plan.
 
 ```sh
+export GANDI_KEY="123...456"
 terraform apply
 ```
 
diff --git a/post-install.tf b/post-install.tf
index c201202..b594317 100644
--- a/post-install.tf
+++ b/post-install.tf
@@ -15,3 +15,30 @@ resource "local_file" "dns_config" {
   filename        = "${var.cluster_name}/dns.env"
   file_permission = "0644"
 }
+
+resource "null_resource" "dnsmasq_config" {
+  triggers = {
+    network_id = libvirt_network.ocp_net.id
+  }
+
+  connection {
+    type = "ssh"
+    host = local.libvirt_server
+    user = local.libvirt_username
+  }
+
+  provisioner "remote-exec" {
+    inline = [
+      "echo 'server=/${local.network_domain}/${cidrhost(var.network_ip_range, 1)}' | sudo tee /etc/NetworkManager/dnsmasq.d/libvirt-ocp-${var.cluster_name}.conf",
+      "sudo pkill -f '[d]nsmasq.*--enable-dbus=org.freedesktop.NetworkManager.dnsmasq'"
+    ]
+  }
+
+  provisioner "remote-exec" {
+    when = destroy
+    inline = [
+      "sudo rm -f /etc/NetworkManager/dnsmasq.d/libvirt-ocp-${var.cluster_name}.conf",
+      "sudo pkill -f '[d]nsmasq.*--enable-dbus=org.freedesktop.NetworkManager.dnsmasq'"
+    ]
+  }
+}
diff --git a/provider.tf b/provider.tf
index 75f2caa..cf18d56 100644
--- a/provider.tf
+++ b/provider.tf
@@ -6,3 +6,9 @@ provider "gandi" {
   # key = "<livedns apikey>"
   # sharing_id = "<sharing id>"
 }
+
+locals {
+  # See post-install.tf
+  libvirt_server   = "hp-ml350.itix.fr"
+  libvirt_username = "nicolas"
+}