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<!-- Copyright (C) 2003 Red Hat, Inc. --> <!-- This material may be distributed only subject to the terms --> <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> <HTML ><HEAD ><TITLE >Maintenance Tools </TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos Reference Manual" HREF="ecos-ref.html"><LINK REL="UP" TITLE="Tests and Demonstrations" HREF="net-common-tests-and-demonstrations.html"><LINK REL="PREVIOUS" TITLE="Interactive Tests" HREF="net-common-interactive-tests.html"><LINK REL="NEXT" TITLE="Support Features" HREF="net-common-support.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos Reference Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="net-common-interactive-tests.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 36. Tests and Demonstrations</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="net-common-support.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="NET-COMMON-MAINTENANCE-TOOLS">Maintenance Tools</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" ><SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >set_mac_address</I ></SPAN > - set MAC address(es) of interfaces in NVRAM</PRE ></TD ></TR ></TABLE ><P >This program makes an example <TT CLASS="FUNCTION" >ioctl()</TT > call <SPAN CLASS="ACRONYM" >SIOCSIFHWADDR</SPAN > “Socket IO Set InterFace HardWare ADDRess” to set the MAC address on targets where this is supported and enabled in the configuration. You must edit the source to choose a MAC address and further edit it to allow this very dangerous operation. Not all ethernet drivers support this operation, because most ethernet hardware does not support it — or it comes pre-set from the factory. <SPAN CLASS="emphasis" ><I CLASS="EMPHASIS" >Do not use this program.</I ></SPAN ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="net-common-interactive-tests.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-ref.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="net-common-support.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Interactive Tests</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="net-common-tests-and-demonstrations.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Support Features</TD ></TR ></TABLE ></DIV ></BODY ></HTML >