title: Vagrant host to guest connection slow
body: <p>I've recently checked out a project that hasn't been touched in 8 months.</p>
  
  <p>On vagrant up-ing I'm finding that any connections made to the guest are ridiculously slow, for example 12 database CRUD operations are taking five minutes to execute against the database on the guest (and it's not the database operations taking the time). </p>
  
  <p>I'm finding though if I ping stackoverflow from both the Windows host and the guest they're returning very similar times back.</p>
  
  <p>Annoyingly there's been quite a few changes since I was last able to get this working due to the previous vagrant box not working. Changes are as follows:</p>
  
  <ul>
  <li>Changing of the actual vagrant box from centos[6.5] to Centos/6</li>
  <li>introduction of --natdnshostresolver1 and --natdnsproxy1 (to try fix this problem)</li>
  <li>Addition of config.vm.synced_folder ".", "/vagrant", type: "virtualbox" (required or the vagrant up failed)</li>
  </ul>
  
  <p>My vagrantfile is as follows:</p>
  
  <pre><code>Vagrant.configure("2") do |config|
  
  config.vm.box = "centos/6"
  
  config.vm.provider "virtualbox" do |v|
     v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
     v.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
  end
  
  config.vm.hostname = "DEV"
  
  config.vm.provision "shell" do |s|
      s.path = "build.sh"
      s.args = ["development"]
  end
  
  config.vm.synced_folder ".", "/vagrant", type: "virtualbox"
  config.vm.synced_folder "../releases", "/mnt/releases"
  config.vm.synced_folder "../sites", "/mnt/releases/sites"
  config.vm.synced_folder "../environment/components", "/mnt/components"
  config.vm.synced_folder "../environment/scripts", "/mnt/scripts"
  config.vm.synced_folder "../core", "/mnt/releases/core"
  config.vm.synced_folder "../controller", "/mnt/releases/controller"
  
  config.vm.network :forwarded_port, guest: 80, host: 8000
  config.vm.network :forwarded_port, guest: 3306, host: 3306
  config.vm.network :forwarded_port, guest: 8080, host: 8080
  config.vm.network :forwarded_port, guest: 22000, host: 22000
  
  end
  </code></pre>
  
  <p>Vagrant version is 1.9.2 (downgraded from 1.9.3 and 1.9.4)
  Virtual box version is 5.1.18</p>