Just for completeness... Here is what works but that you probably shouldn't do: 

use OUILookup qw( get_oui_owner $oui_location );
$oui_location = "oui2.txt";

[download]
and 
package OUILookup;

use strict;
use warnings;

use base qw( Exporter );
use LWP::Simple;

use vars qw(
    @EXPORT @EXPORT_OK $VERSION $oui_address $oui_location );
BEGIN {
    @EXPORT= qw(get_oui_owner);
    @EXPORT_OK= qw( $oui_address $oui_location );
    $VERSION   = 1.00;

    $oui_address = "http://standards.ieee.org/regauth/oui/oui.txt";
    $oui_location = "oui.txt";
}

[download]
That is, ex/importing 'x' is the same as eximporting '&x' so to export a variable you have to include the '$', '@', or '%' in both the @EXPORT/@EXPORT_OK and the use line.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: Allowing user to change module variables by tye
in thread Allowing user to change module variables by mvaline

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.