Hello TorNZZ and welcome to the monastery and to the wonderful world of Perl

Disclaimer: my network-fu is very limited (read: google).

It seems to me that the MAC fe:ff:ff:ff:ff:ff must be something special, like a dummy MAC assigned to (virtual) interfaces. It is the last address of such used for Ipv4 Address Holder according to iana - ethernet numbers. It must be the broadcast address (see here)

If i understand it correctly the MAC part, in the ethernet frame, is modified at each net device the UDP packet traverse. The MAC is normally added by the driver at the source(?).

Anyway you might be interested in Re: transmit udp packets by VinsWorldcom that for sure has more experience than me. The post suggests Net::Pcap and Net::Filter Net::Frame as base resource.

L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re: Building a UDP Ethernet header by Discipulus
in thread Building a UDP Ethernet header by TorNZZ

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.