diff --git a/manifests/if/dynamic.pp b/manifests/if/dynamic.pp
index c66ec298..1f08d5dc 100644
--- a/manifests/if/dynamic.pp
+++ b/manifests/if/dynamic.pp
@@ -4,13 +4,16 @@
 #
 # === Parameters:
 #
-#   $ensure        - required - up|down
-#   $macaddress    - optional - defaults to macaddress_$title
-#   $bootproto     - optional - defaults to "dhcp"
-#   $userctl       - optional - defaults to false
-#   $mtu           - optional
-#   $dhcp_hostname - optional
-#   $ethtool_opts  - optional
+#   $ensure          - required - up|down
+#   $macaddress      - optional - defaults to macaddress_$title
+#   $bootproto       - optional - defaults to "dhcp"
+#   $userctl         - optional - defaults to false
+#   $mtu             - optional
+#   $dhcp_hostname   - optional
+#   $ethtool_opts    - optional
+#   $peerdns         - optional
+#   $linkdelay       - optional
+#   $check_link_down - optional
 #
 # === Actions:
 #
@@ -39,13 +42,15 @@
 #
 define network::if::dynamic (
   $ensure,
-  $macaddress = undef,
-  $bootproto = 'dhcp',
-  $userctl = false,
-  $mtu = undef,
-  $dhcp_hostname = undef,
-  $ethtool_opts = undef,
-  $linkdelay = undef
+  $macaddress      = undef,
+  $bootproto       = 'dhcp',
+  $userctl         = false,
+  $mtu             = undef,
+  $dhcp_hostname   = undef,
+  $ethtool_opts    = undef,
+  $peerdns         = false,
+  $linkdelay       = undef,
+  $check_link_down = false
 ) {
   # Validate our regular expressions
   $states = [ '^up$', '^down$' ]
@@ -60,18 +65,21 @@
   }
   # Validate booleans
   validate_bool($userctl)
+  validate_bool($peerdns)
 
   network_if_base { $title:
-    ensure        => $ensure,
-    ipaddress     => '',
-    netmask       => '',
-    gateway       => '',
-    macaddress    => $macaddy,
-    bootproto     => $bootproto,
-    userctl       => $userctl,
-    mtu           => $mtu,
-    dhcp_hostname => $dhcp_hostname,
-    ethtool_opts  => $ethtool_opts,
-    linkdelay     => $linkdelay,
+    ensure          => $ensure,
+    ipaddress       => '',
+    netmask         => '',
+    gateway         => '',
+    macaddress      => $macaddy,
+    bootproto       => $bootproto,
+    userctl         => $userctl,
+    mtu             => $mtu,
+    dhcp_hostname   => $dhcp_hostname,
+    ethtool_opts    => $ethtool_opts,
+    peerdns         => $peerdns,
+    linkdelay       => $linkdelay,
+    check_link_down => $check_link_down,
   }
 } # define network::if::dynamic
diff --git a/manifests/init.pp b/manifests/init.pp
index 65bd4b2f..01e26004 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -49,23 +49,26 @@
 #
 # === Parameters:
 #
-#   $ensure        - required - up|down
-#   $ipaddress     - required
-#   $netmask       - required
-#   $macaddress    - required
-#   $gateway       - optional
-#   $bootproto     - optional
-#   $userctl       - optional - defaults to false
-#   $mtu           - optional
-#   $dhcp_hostname - optional
-#   $ethtool_opts  - optional
-#   $bonding_opts  - optional
-#   $isalias       - optional
-#   $peerdns       - optional
-#   $dns1          - optional
-#   $dns2          - optional
-#   $domain        - optional
-#   $bridge        - optional
+#   $ensure          - required - up|down
+#   $ipaddress       - required
+#   $netmask         - required
+#   $macaddress      - required
+#   $gateway         - optional
+#   $bootproto       - optional
+#   $userctl         - optional - defaults to false
+#   $mtu             - optional
+#   $dhcp_hostname   - optional
+#   $ethtool_opts    - optional
+#   $bonding_opts    - optional
+#   $isalias         - optional
+#   $peerdns         - optional
+#   $dns1            - optional
+#   $dns2            - optional
+#   $domain          - optional
+#   $bridge          - optional
+#   $linkdelay       - optional
+#   $check_link_down - optional
+
 #
 # === Actions:
 #
@@ -97,25 +100,26 @@
   $ipaddress,
   $netmask,
   $macaddress,
-  $gateway = undef,
-  $ipv6address = undef,
-  $ipv6gateway = undef,
-  $ipv6init = false,
-  $ipv6autoconf = false,
-  $bootproto = 'none',
-  $userctl = false,
-  $mtu = undef,
-  $dhcp_hostname = undef,
-  $ethtool_opts = undef,
-  $bonding_opts = undef,
-  $isalias = false,
-  $peerdns = false,
-  $ipv6peerdns = false,
-  $dns1 = undef,
-  $dns2 = undef,
-  $domain = undef,
-  $bridge = undef,
-  $linkdelay = undef
+  $gateway         = undef,
+  $ipv6address     = undef,
+  $ipv6gateway     = undef,
+  $ipv6init        = false,
+  $ipv6autoconf    = false,
+  $bootproto       = 'none',
+  $userctl         = false,
+  $mtu             = undef,
+  $dhcp_hostname   = undef,
+  $ethtool_opts    = undef,
+  $bonding_opts    = undef,
+  $isalias         = false,
+  $peerdns         = false,
+  $ipv6peerdns     = false,
+  $dns1            = undef,
+  $dns2            = undef,
+  $domain          = undef,
+  $bridge          = undef,
+  $linkdelay       = undef,
+  $check_link_down = false
 ) {
   # Validate our booleans
   validate_bool($userctl)
@@ -124,6 +128,7 @@
   validate_bool($ipv6init)
   validate_bool($ipv6autoconf)
   validate_bool($ipv6peerdns)
+  validate_bool($check_link_down)
   # Validate our regular expressions
   $states = [ '^up$', '^down$' ]
   validate_re($ensure, $states, '$ensure must be either "up" or "down".')
diff --git a/spec/defines/network_if_dynamic_spec.rb b/spec/defines/network_if_dynamic_spec.rb
index 477a8d2a..1de7eb37 100644
--- a/spec/defines/network_if_dynamic_spec.rb
+++ b/spec/defines/network_if_dynamic_spec.rb
@@ -51,14 +51,16 @@
   context 'optional parameters' do
     let(:title) { 'eth99' }
     let :params do {
-      :ensure        => 'down',
-      :macaddress    => 'ef:ef:ef:ef:ef:ef',
-      :bootproto     => 'bootp',
-      :userctl       => true,
-      :mtu           => '1500',
-      :ethtool_opts  => 'speed 100 duplex full autoneg off',
-      :dhcp_hostname => 'hostname',
-      :linkdelay     => '5',
+      :ensure          => 'down',
+      :macaddress      => 'ef:ef:ef:ef:ef:ef',
+      :bootproto       => 'bootp',
+      :userctl         => true,
+      :mtu             => '1500',
+      :dhcp_hostname   => 'hostname',
+      :ethtool_opts    => 'speed 100 duplex full autoneg off',
+      :peerdns         => true,
+      :linkdelay       => '5',
+      :check_link_down => true,
     }
     end
     let :facts do {
diff --git a/templates/ifcfg-eth.erb b/templates/ifcfg-eth.erb
index 42b2065b..768b44df 100644
--- a/templates/ifcfg-eth.erb
+++ b/templates/ifcfg-eth.erb
@@ -3,16 +3,16 @@
 ###
 DEVICE=<%= @interface %>
 BOOTPROTO=<%= @bootproto %>
-<% if @macaddress %>HWADDR=<%= @macaddress %>
+<% if @macaddress and @macaddress != '' %>HWADDR=<%= @macaddress %>
 <% end -%>
 ONBOOT=<%= @onboot %>
 HOTPLUG=<%= @onboot %>
 TYPE=Ethernet
-<% if @ipaddress %>IPADDR=<%= @ipaddress %>
+<% if @ipaddress and @ipaddress != '' %>IPADDR=<%= @ipaddress %>
 <% end -%>
-<% if @netmask %>NETMASK=<%= @netmask %>
+<% if @netmask and @netmask != '' %>NETMASK=<%= @netmask %>
 <% end -%>
-<% if @gateway %>GATEWAY=<%= @gateway %>
+<% if @gateway and @gateway != '' %>GATEWAY=<%= @gateway %>
 <% end -%>
 <% if @mtu %>MTU=<%= @mtu %>
 <% end -%>
@@ -50,4 +50,9 @@ IPV6INIT=yes
 <% end -%>
 <% if @linkdelay %>LINKDELAY=<%= @linkdelay %>
 <% end -%>
+<% if @check_link_down %>
+check_link_down() {
+ return 1;
+}
+<% end -%>
 NM_CONTROLLED=no