what is LOG_NONE in access.log?

From: Joe Ramey <ramey@dont-contact.us>
Date: Mon, 10 Jun 1996 14:54:48 -0500 (CDT)

We get quite a few entries like this in our access.log:

128.247.172.177 - - [10/Jun/1996:14:53:31 -0500] "NONE -" LOG_NONE 0
128.247.172.177 - - [10/Jun/1996:14:53:33 -0500] "NONE -" LOG_NONE 0

What is the meaning of this log entry?
Received on Mon Jun 10 1996 - 12:56:32 MDT

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