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<br><div><div>On Sep 4, 2006, at 10:16 AM, Lennart Poettering wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><blockquote type="cite"><p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Apple has this page on mixed routable and ip4ll addresses:</font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><a href="http://developer.apple.com/qa/qa2004/qa1357.html">http://developer.apple.com/qa/qa2004/qa1357.html</a></font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">I have no idea of the default routing settings of most of the linux <span class="Apple-converted-space"> </span></font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">distributions, but it seems debian at least doesn't have the settings <span class="Apple-converted-space"> </span></font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">for responding to a host with an ipv4ll address when a routable <span class="Apple-converted-space"> </span></font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">address is set.<span class="Apple-converted-space"> </span>Do you have any plans for providing defaults/<span class="Apple-converted-space"> </span></font></p> <p style="margin: 0.0px 0.0px 0.0px 10.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">guidance for these?</font></p> </blockquote><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><br></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">I'll leave this up to the distributions.<span class="Apple-converted-space"> </span></font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px"><br></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Honestly I believe that their claim "Most modern Linux distributions</font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">already include full IPv4 link-local support" is not true.</font></p></blockquote><div><br class="webkit-block-placeholder"></div><div>I'll take the blame for that. I was the one who wrote that article and I thought it was true.</div><div><br></div><div><br class="webkit-block-placeholder"></div><br><blockquote type="cite"> <p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px">I see the point for adding these routing table entries,</p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">though. Although I am sure they're not without problems. Adding these</font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">rules will force the usage of ARP for all destinations that do not</font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">have an explicit route defined. This will cause ARP timeouts and might</font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">be a security hole. However the impact of this is not entirely clear</font></p> <p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">to me.</font></p> </blockquote></div><br><div>These routes only take affect when you have no other routes configured, so as long as you have a router address configured, these entries will not be used. Mac OS X ships with these routes by default and I've never heard of any reported issues with them.</div><div><br class="webkit-block-placeholder"></div><div>-Marc</div><div><br class="webkit-block-placeholder"></div></body></html>