From e57564c9570dde29bdc78d59b45f8fca336bb23d Mon Sep 17 00:00:00 2001
From: Kunal Parikh <kunal@techthumb.in>
Date: Sun, 11 Nov 2012 15:54:32 +1100
Subject: [PATCH] Using 'Socket.gethostname' to get default hostname As
 suggested by @bhollis in
 https://github.com/middleman/middleman/pull/665#issuecomment-10262763

---
 middleman-core/lib/middleman-core/preview_server.rb | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/middleman-core/lib/middleman-core/preview_server.rb b/middleman-core/lib/middleman-core/preview_server.rb
index c3e6fc91..eddd6637 100644
--- a/middleman-core/lib/middleman-core/preview_server.rb
+++ b/middleman-core/lib/middleman-core/preview_server.rb
@@ -3,7 +3,6 @@ require "webrick"
 module Middleman
   module PreviewServer
 
-    DEFAULT_HOST = '0.0.0.0'
     DEFAULT_PORT = 4567
 
     class << self
@@ -14,7 +13,7 @@ module Middleman
       # @return [void]
       def start(opts={})
         @options = opts
-        @host = @options[:host] || DEFAULT_HOST
+        @host = @options[:host] || Socket.gethostname
         @port = @options[:port] || DEFAULT_PORT
 
         mount_instance