<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Is the relay receiving all of these discover requests or is it
duplicating the same one?<br>
<br>
I'm wondering whether the host or the relay is generating all of this
activity.<br>
<br>
<br>
<blockquote cite="mid:4C3B7D79.3090004@dgnetwork.com.br" type="cite"><span
id="result_box" class="long_text"><span
style="background-color: rgb(255, 255, 255);" title="">I'm having the
following problem, a client begins randomly sending a storm of requests
DISCOVERY, and DHCP responds with a OFFER, but </span></span><span
id="result_box" class="long_text"><span title="">nothing more than that</span></span><span
id="result_box" class="long_text"><span
style="background-color: rgb(255, 255, 255);" title="">. </span><span
title="">These requests cause denial of service on DHCP. </span><span
style="background-color: rgb(255, 255, 255);" title="">Even removing
the MAC from DHCP, the DISCOVERY continuing.</span></span><span
id="headingtext" class="normaltext"></span><span id="result_box"
class="short_text"><span style="background-color: rgb(255, 255, 255);"
title=""> I tried these versions </span></span>V3.1.1 and 4.1.1-P1<span
id="result_box" class="short_text"><span
style="background-color: rgb(255, 255, 255);" title="">, both have the
same problem. <br>
</span></span><span id="result_box" class="short_text"><span
style="background-color: rgb(255, 255, 255);" title="">The IP
10.40.0.1 is a Cisco CMTS with dhcp relay activated.</span></span><br>
<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPOFFER on 200.XX.XX.XX to
08:10:74:33:3a:af (Router) via 10.14.0.1<br>
Jul 12 12:03:03 gw dhcpd: DHCPDISCOVER from 08:10:74:33:3a:af (Router)
via 10.14.0.1<br>
<br>
Thanks.<br>
<br>
Daniel<br>
<br>
<pre wrap="">
<fieldset class="mimeAttachmentHeader"></fieldset>
_______________________________________________
dhcp-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:dhcp-users@lists.isc.org">dhcp-users@lists.isc.org</a>
<a class="moz-txt-link-freetext" href="https://lists.isc.org/mailman/listinfo/dhcp-users">https://lists.isc.org/mailman/listinfo/dhcp-users</a></pre>
</blockquote>
<br>
</body>
</html>