diff --git a/middleman-core/lib/middleman-core/cli/server.rb b/middleman-core/lib/middleman-core/cli/server.rb
index 73bd7c13..782d9faf 100644
--- a/middleman-core/lib/middleman-core/cli/server.rb
+++ b/middleman-core/lib/middleman-core/cli/server.rb
@@ -15,7 +15,7 @@ module Middleman::Cli
     method_option :host,
       :type    => :string,
       :aliases => '-h',
-      :default => Socket.ip_address_list.find(&:ipv4_private?).ip_address,
+      :default => '0.0.0.0',
       :desc    => 'Bind to HOST address'
     method_option :port,
       :aliases => '-p',
diff --git a/middleman-core/lib/middleman-core/preview_server.rb b/middleman-core/lib/middleman-core/preview_server.rb
index 3191e741..efb72bae 100644
--- a/middleman-core/lib/middleman-core/preview_server.rb
+++ b/middleman-core/lib/middleman-core/preview_server.rb
@@ -15,7 +15,7 @@ module Middleman
       # @return [void]
       def start(opts={})
         @options = opts
-        @host = @options[:host] || Socket.ip_address_list.find(&:ipv4_private?).ip_address
+        @host = @options[:host] || '0.0.0.0'
         @port = @options[:port] || DEFAULT_PORT
 
         mount_instance(new_app)