mattiasgeniar/varnish-3.0-configuration-templates — pull request #9 by peterlozano (2013-11-07 18:51:22+00:00)
Title: Put http auth condition before include or it may never be executed.

It is pretty probable that the file included at the end of vcl_recv contain inconditional return calls (like the drupal one) and the http auth condition may never be considered.