Where does Mozilla get its list of printers?

[Kirk Strauser <kirk@strauser.com>]

I use CUPS to print from my Sid system.  When I go to print from Mozilla, I
get to choose from:

  huffalump@:64
  spooldir_tmp_Xprintjobs@:64
  PostScript/default

"huffalump" is the name of the laser printer on my FreeBSD box across the
room, served via CUPS.  My /etc/printcap is pretty barren:

    # /etc/printcap: printer capability database. See printcap(5).
    # You can use the filter entries df, tf, cf, gf etc. for
    # your own filters. See /etc/filter.ps, /etc/filter.pcl and
    # the printcap(5) manual page for further details.

    lp|Generic dot-matrix printer entry:\
            :lp=/dev/lp0:\
            :sd=/var/spool/lpd/lp:\
            :af=/var/log/lp-acct:\
            :lf=/var/log/lp-errs:\
            :pl#66:\
            :pw#80:\
            :pc#150:\
            :mx#0:\
            :sh:

    # rlp|Remote printer entry:\
    #         :lp=:\
    #         :rm=remotehost:\
    #         :rp=remoteprinter:\
    #         :sd=/var/spool/lpd/remote:\
    #         :mx#0:\
    #         :sh:

So, where is Mozilla finding huffalump?  What does the "@:64" suffix mean?
And why can't I print to it?
-- 
Kirk Strauser

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