system-config-printer and two networks without a bridge

[George Garvey]

# Lines below are automatically generated - DO NOT EDIT
<Location /printers/Lexmark4039L>
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
AuthType None
Allow from 192.168.1.0/255.255.255.0
Allow from 192.168.2.0/255.255.255.0
</Location>
<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
Allow From 192.168.2.3
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
</Location>
Browsing On
BrowseProtocols cups
BrowseOrder Deny,Allow
BrowseAllow from @LOCAL
BrowseAddress 255.255.255.255
Listen *:631

The line marked above lets me use cups with two networks, 192.168.1.* and
192.168.2.*, which are across an unbridged P2P T1, so broadcasts don't pass
through. (I would guess that an allow from for a network would work, too.)

But I have no clue how to get system-config-printer to do this, nor how to
get it to leave it alone if I do it. Will system-config-printer do this,
somehow?