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The following page has been changed by slive:
http://wiki.apache.org/httpd/Logs/InternalDummyConnection

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  === Requests From the Server to Itself ===
  
- When the Apache HTTP Server manages its child processes, it needs to a way to 
wake up processes that are listening for new connections. To do this, it sends 
a simple HTTP request back to itself. This request will appear in the 
access_log file with the remote address set to the loop-back interface 
(typically 127.0.0.1 or ::1 if IPv6 is configured). If you log the User-Agent 
string (as in the combined log format), you will see the server signature 
followed by "{{{(Internal Dummy Connection)}}}" on non-SSL servers. During 
certain periods you may see up to one such request for each {{{httpd}}} child 
process.
+ When the Apache HTTP Server manages its child processes, it needs to a way to 
wake up processes that are listening for new connections. To do this, it sends 
a simple HTTP request back to itself. This request will appear in the 
access_log file with the remote address set to the loop-back interface 
(typically 127.0.0.1 or ::1 if IPv6 is configured). If you log the User-Agent 
string (as in the combined log format), you will see the server signature 
followed by "{{{(internal dummy connection)}}}" on non-SSL servers. During 
certain periods you may see up to one such request for each {{{httpd}}} child 
process.
  
  These requests are perfectly normal and you do not, in general, need to worry 
about them. They can simply be ignored.
  

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