<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> radvd-devel-l-bounces@litech.org [mailto:radvd-devel-l-bounces@litech.org] <b>On Behalf Of </b>Reuben Hawkins<br><b>Sent:</b> 21 February 2011 16:53<br><b>To:</b> radvd Development Discussion<br><b>Subject:</b> Re: [radvd-devel-l] Replies to Router Solicitation<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Feb 21, 2011 at 7:45 AM, Panagiotis Georgopoulos <<a href="mailto:panos@comp.lancs.ac.uk">panos@comp.lancs.ac.uk</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hello all,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> I am running radvd v. 1.7 and I am wondering about its replies to Router Solicitation messages. Am I right in thinking that radvd should respond to any Router Solicitation messages that it sees? Does it respond instantaneously or with a certain delay? <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> Thanks a lot in advance,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> Panos<o:p></o:p></p></div></div></div><p class=MsoNormal><span style='color:#1F497D'>-----<o:p></o:p></span></p><p class=MsoNormal><br>Hi Panos,<br><br>RADVD does not send a response to every solicitation and there is a random delay (between 0 and 1/2 seconds I think). The random delay is called for in RFC 2461 (<a href="http://www.faqs.org/rfcs/rfc2461.html">http://www.faqs.org/rfcs/rfc2461.html</a>). It's not really that important, but it cuts down on the number of broadcast advertisements needed.<br><br>RADVD should NOT respond to every solicitation it sees (we don't want to flood the network with useless advertisements). However, if you're finding you don't get an address fast enough, then you may have a bug or configuration issue.<br><br>Thanks,<br>Reuben<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>-------------<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hello Reuben,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Thanks for your reply, it is really helpful. Is there any flag that sets the maximum response delay to a solicitation ? How can we learn what is the maximum delay right now, so that I can identify whether I have a bug or a configuration issue.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Also, when you say does not respond to every solicitation it sees (understandably), what is the algorithm behind that? E.g. ignore RS if I have send an RA in less than 3 seconds?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Thanks a lot in advance,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Panos<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></div></body></html>