anchor.diff:  
   vagrant box remove %box_name% --provider=%box_provider%
   vagrant box add %box_name% %box_path%
  +if ERRORLEVEL 1 set result=%ERRORLEVEL%
   if ERRORLEVEL 1 goto :done
   mkdir %tmp_path%
   
  
positive.code: del /F %USERPROFILE%\.ssh\known_hosts
  if exist %USERPROFILE%\.ssh\known_hosts echo known_hosts still here!!
  vagrant up --provider=%vagrant_provider%
  if ERRORLEVEL 1 goto :done
  
  set VAGRANT_LOG=warn
  @echo Sleep 10 seconds
  @ping 1.1.1.1 -n 1 -w 10000 > nul
  
  vagrant destroy -f
  if ERRORLEVEL 1 goto :done
  popd
  
  vagrant box remove %box_name% --provider=%box_provider%
  if ERRORLEVEL 1 goto :done
  
  goto :done
  
  
negative.code: @echo solution that waits until the import is really finished.
  @ping 1.1.1.1 -n 1 -w 240000 > nul
  
  set result=0
  
  pushd %tmp_path%
  call :create_vagrantfile
  set VAGRANT_LOG=debug
  