diff --git a/CHANGELOG.md b/CHANGELOG.md
index d615f41c9..1f53e074f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
   - Match VM names that have parens, brackets, etc.
   - Detect when the VirtualBox kernel module is not loaded and error. [GH-677]
+  - Set `:auto_config` to false on any networking option to not automatically
+    configure it on the guest. [GH-663]
 
 ## 0.9.3 (January 24, 2012)
 
diff --git a/lib/vagrant/action/vm/network.rb b/lib/vagrant/action/vm/network.rb
index f6520afb9..122802027 100644
--- a/lib/vagrant/action/vm/network.rb
+++ b/lib/vagrant/action/vm/network.rb
@@ -37,8 +37,12 @@ module Vagrant
             adapters << adapter
 
             # Get the network configuration
-            network = send("#{type}_network_config", config)
-            networks << network
+            if config[:auto_config]
+              network = send("#{type}_network_config", config)
+              networks << network
+            else
+              @logger.info("Auto config disabled, not configuring: #{type}")
+            end
           end
 
           if !adapters.empty?
@@ -167,7 +171,8 @@ module Vagrant
             :netmask => "255.255.255.0",
             :adapter => nil,
             :mac     => nil,
-            :name    => nil
+            :name    => nil,
+            :auto_config => true
           }.merge(options)
 
           # Verify that this hostonly network wouldn't conflict with any
@@ -307,7 +312,8 @@ module Vagrant
 
           return {
             :adapter => nil,
-            :mac     => nil
+            :mac     => nil,
+            :auto_config => true
           }.merge(options)
         end