[cups.general] actions by "anonymous"

[Matt LaPlante]

Cups 1.4.5

Assuming cupsd.conf contains the following:

  <Limit Pause-Printer Resume-Printer Set-Printer-Attributes
Enable-Printer Disable-Printer Pause-Printer-After-Current-Job
Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer
Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer
Promote-Job Schedule-Job-After CUPS-Add-Printer CUPS-Delete-Printer
CUPS-Add-Class CUPS-Delete-Class CUPS-Accept-Jobs CUPS-Reject-Jobs
CUPS-Set-Default>
    Satisfy Any
    Allow From @IF(lo)
    AuthType Basic
    Require user @SYSTEM @printer-admins
    Order deny,allow
  </Limit>

Why would the cups log produce the following?

I [14/Feb/2011:21:31:51 +0000] New printer "foo" added by "anonymous".
I [14/Feb/2011:21:31:54 +0000] Printer "foo" modified by "anonymous".

In fact, most of the actions taken are reported as being done by
"anonymous" in the log.  I reproduced this myself, and I can confirm
that cups authenticated me prior to letting me add the printer, but it
apparently did not keep track of my username.  If it does not gather
the username from auth, when would it?