title: Vagrant + VirtualBox VM aborted after sleep
body: <p>I have a problem with my Vagrant VM running on VirtualBox: every time I close the lid of my MacBook, the VM is aborted and I have to 'vagrant up' it again. I don't think it's the intended behaviour, and it's quite annoying to start over every time.</p>
  
  <p>Checking the DiagnosticReports folder I can find a crash report from VirtualBox every time I close the lid with a running VM, this is an extract from the first part:</p>
  
  <pre><code>Process:               VBoxHeadless [6267]
  Path:                  /Applications/VirtualBox.app/Contents/MacOS/VBoxHeadless
  Identifier:            VBoxHeadless
  Version:               ???
  Code Type:             X86-64 (Native)
  Parent Process:        VBoxSVC [6215]
  Responsible:           VirtualBox [6210]
  User ID:               501
  
  Date/Time:             2015-02-15 10:27:16.982 +0100
  OS Version:            Mac OS X 10.10.2 (14C109)
  Report Version:        11
  Anonymous UUID:        453DE236-2C46-1B97-1C8F-D91BAF75710E
  
  Sleep/Wake UUID:       21FE4DBC-7544-453E-B166-C48801F5CDDB
  
  Time Awake Since Boot: 35000 seconds
  Time Since Wake:       2700 seconds
  
  Crashed Thread:        7  EMT
  
  Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
  Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
  
  VM Regions Near 0:
  --&gt; 
      __TEXT                 0000000100000000-0000000100008000 [   32K] r-x/rwx SM=COW  /Applications/VirtualBox.app/Contents/MacOS/VBoxHeadless
  
  Thread 0:: Dispatch queue: com.apple.main-thread
  0   libsystem_kernel.dylib          0x00007fff8bf734de mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff8bf7264f mach_msg + 55
  2   com.apple.CoreFoundation        0x00007fff8b356b34 __CFRunLoopServiceMachPort + 212
  3   com.apple.CoreFoundation        0x00007fff8b355ffb __CFRunLoopRun + 1371
  4   com.apple.CoreFoundation        0x00007fff8b355858 CFRunLoopRunSpecific + 296
  5   VBoxHeadless.dylib              0x0000000100080b91 TrustedMain + 44177
  6   VBoxHeadless.dylib              0x0000000100080e5b TrustedMain + 44891
  7   VBoxHeadless.dylib              0x0000000100079b31 TrustedMain + 15409
  8   VBoxHeadless                    0x0000000100003d95 start + 7061
  9   VBoxHeadless                    0x0000000100002234 start + 52
  </code></pre>
  
  <p>Is there anything I can do to fix this thing by myself, or do I have to open a bug report for the VirtualBox support team?</p>
  
  <ul>
  <li>OSX v10.10.2</li>
  <li>VirtualBox v4.3.22</li>
  <li>Vagrant v1.7.2</li>
  </ul>