(null) server?

I apologize for posting this to the dev mailing list, but the
modules-dev mailing list is no longer active.

I am chasing a loadable module problem which at first appeared to be
in the module's server configuration routine.  Dumping information
at each call to the config routine, I was surprised to see that
the first call relates to a server named (null) residing on port 0.

Can someone illuminate what the (null) server is?  I do see
that it is not the default server, because that is called next.
If there is no function for the (null) server I think I am
probably wasting memory allocating per-server local storage for it
which will never be used.


  > root@www:/var/log/apache# apachectl start
  > Feb 16 03:35:40  ** mod_botlist: Enter blg_server_config
  > Feb 16 03:35:40  **              Server hostname <(null)> port 0
  > Feb 16 03:35:40  **              Alloced and zeroed 2220 at C3F5E8
  > Feb 16 03:35:40  **              Zero statistics
  > Feb 16 03:35:40  **              Set defaults
  > Feb 16 03:35:40  ** mod_botlist: Exit blg_server_config
  > Feb 16 03:35:40  ** mod_botlist: Enter blg_server_config
  > Feb 16 03:35:40  **              Server hostname <default> port 80
  > Feb 16 03:35:40  **              Alloced and zeroed 2220 at CABA88
  > Feb 16 03:35:40  **              Zero statistics
  > Feb 16 03:35:40  **              Set defaults
  > Feb 16 03:35:40  ** mod_botlist: Exit blg_server_config
  > Feb 16 03:35:40  ** mod_botlist: Enter blg_server_config
  > Feb 16 03:35:40  **              Server hostname <www.myserver1.com>
port 80
  > Feb 16 03:35:40  **              Alloced and zeroed 2220 at CBE3D8
  > Feb 16 03:35:40  **              Zero statistics
  > Feb 16 03:35:40  **              Set defaults
  > Feb 16 03:35:40  ** mod_botlist: Exit blg_server_config
(more servers are configured ...)