diff --git a/data/stacks/common.yaml b/data/stacks/common.yaml
index 94e37ad..6955851 100644
--- a/data/stacks/common.yaml
+++ b/data/stacks/common.yaml
@@ -3,6 +3,7 @@
 
 ## Basic example
 examples::basic::vars:
+  domain_name: 'basic.example'
   region: 'us-east-2'
   stack_item_fullname: 'Basic Examples'
   stack_item_label: 'bsc'
diff --git a/dhcp/main.tf b/dhcp/main.tf
index 5d3312f..382000b 100644
--- a/dhcp/main.tf
+++ b/dhcp/main.tf
@@ -1,12 +1,17 @@
 # DHCP Options
 
+## Set Terraform version constraint
+terraform {
+  required_version = "> 0.8.0"
+}
+
 ## Provisions DHCP options
 resource "aws_vpc_dhcp_options" "dhcp" {
   domain_name          = "${var.domain_name}"
-  domain_name_servers  = ["${var.name_servers}"]
-  netbios_name_servers = ["${var.netbios_name_servers}"]
+  domain_name_servers  = ["${compact(var.name_servers)}"]
+  netbios_name_servers = ["${compact(var.netbios_name_servers)}"]
   netbios_node_type    = "${var.netbios_node_type}"
-  ntp_servers          = ["${var.ntp_servers}"]
+  ntp_servers          = ["${compact(var.ntp_servers)}"]
 
   tags {
     application = "${var.stack_item_fullname}"
diff --git a/dhcp/variables.tf b/dhcp/variables.tf
index ba02bb5..6eec3ce 100644
--- a/dhcp/variables.tf
+++ b/dhcp/variables.tf
@@ -21,29 +21,29 @@ variable "vpc_id" {
 variable "domain_name" {
   type        = "string"
   description = "The suffix domain name to use by default when resolving non Fully Qualified Domain Names"
-  default     = "service.consul"
+  default     = ""
 }
 
 variable "name_servers" {
   type        = "list"
   description = "List of name servers to configure in '/etc/resolv.conf'"
-  default     = ["127.0.0.1"]
+  default     = ["AmazonProvidedDNS"]
 }
 
 variable "netbios_name_servers" {
   type        = "list"
   description = "List of NETBIOS name servers"
-  default     = ["127.0.0.1"]
+  default     = []
 }
 
 variable "netbios_node_type" {
   type        = "string"
   description = "The NetBIOS node type (1, 2, 4, or 8). AWS recommends to specify 2 since broadcast and multicast are not supported in their network."
-  default     = "2"
+  default     = ""
 }
 
 variable "ntp_servers" {
   type        = "list"
   description = "List of NTP servers to configure"
-  default     = ["127.0.0.1"]
+  default     = []
 }
diff --git a/examples/basic/main.tf b/examples/basic/main.tf
index 266d9b7..14550bd 100644
--- a/examples/basic/main.tf
+++ b/examples/basic/main.tf
@@ -18,6 +18,18 @@ module "vpc_base" {
   vpc_cidr            = "${var.vpc_cidr}"
 }
 
+## Configures DHCP
+module "vpc_dhcp" {
+  # Example GitHub source
+  #source = "github.com/unifio/terraform-aws-vpc?ref=master//dhcp"
+  source = "../../dhcp"
+
+  domain_name         = "${var.domain_name}"
+  stack_item_fullname = "${var.stack_item_fullname}"
+  stack_item_label    = "${var.stack_item_label}"
+  vpc_id              = "${module.vpc_base.vpc_id}"
+}
+
 ## Configures VPC Availabilty Zones
 module "vpc_az" {
   # Example GitHub source
diff --git a/examples/basic/variables.tf b/examples/basic/variables.tf
index 0ef624d..9aa7cbb 100644
--- a/examples/basic/variables.tf
+++ b/examples/basic/variables.tf
@@ -28,6 +28,12 @@ variable "vpc_cidr" {
   type = "string"
 }
 
+## DHCP
+variable "domain_name" {
+  type    = "string"
+  default = ""
+}
+
 ## AZ parameters
 variable "azs_provisioned" {
   type    = "string"