[Httpd Wiki] Trivial Update of "InternalDummyConnection" by JeffGodin

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

The comment on the change is:
prevent CustomLog from being interpreted as a WikiPage

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  SetEnvIf Remote_Addr "127\.0\.0\.1" loopback
  }}}
  
- and then add {{{env=!loopback}}} to the end of your CustomLog directive.
+ and then add {{{env=!loopback}}} to the end of your !CustomLog directive.
  
  In 2.2.6 and earlier, in certain configurations, these requests may hit a heavy-weight dynamic web page and cause unnecessary load on the server. You can avoid this by using mod_rewrite to respond with a redirect when accessed with that specific User-Agent or IP address.