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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">I don't believe you answered Judy's question. Related to that - is there a static entry on this workstation that is conflicting with what DHCP would be returning?<br>
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You looked at the messages between the client and server. Did you confirm that the packets coming from the DHCP server have the data you expect?
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Are there other Gigaset SX686 on the network? That is, when you are comparing your failing host to a working host, are you comparing it to a similar piece of hardware? I'm curious about the implication that the Message Size parameter is only being sent from
a single host - what is the DHCP server's response to that parameter, if any?<br>
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<div style="direction: ltr;" id="divRpF162745"><font color="#000000" face="Tahoma" size="2"><b>From:</b> dhcp-users-bounces@lists.isc.org [dhcp-users-bounces@lists.isc.org] on behalf of Muhammad Faisal [faisalusuf@yahoo.com]<br>
<b>Sent:</b> Tuesday, October 27, 2015 11:50 PM<br>
<b>To:</b> Judy Hao; Users of ISC DHCP<br>
<b>Subject:</b> Re: Strange behavior No Gateway address after successful IP lease on ISC DHCP Server 4.1<br>
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<div id="yui_3_16_0_1_1445971025243_3507"><span id="yui_3_16_0_1_1445971025243_3684">Hi Judy,</span></div>
<div id="yui_3_16_0_1_1445971025243_3507" dir="ltr"><span id="yui_3_16_0_1_1445971025243_3685">Thanks for your response.</span></div>
<div id="yui_3_16_0_1_1445971025243_3507" dir="ltr"><span id="yui_3_16_0_1_1445971025243_3634">There is only one dhcp client which has unusual behavior. Rest of the clients are normally working on the same server. Any clue?</span></div>
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<div id="yui_3_16_0_1_1445971025243_3506"> </div>
<div class="signature" id="yui_3_16_0_1_1445971025243_3505">Regards, Muhammad Faisal.</div>
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<font id="yui_3_16_0_1_1445971025243_3500" face="Arial" size="2"><b id="yui_3_16_0_1_1445971025243_3636"><span id="yui_3_16_0_1_1445971025243_3635" style="font-weight:bold">From:</span></b> Judy Hao <Judy.Hao@brocade.com><br>
<b><span style="font-weight:bold">To:</span></b> Muhammad Faisal <faisalusuf@yahoo.com>; Users of ISC DHCP <dhcp-users@lists.isc.org>
<br>
<b><span style="font-weight:bold">Sent:</span></b> Wednesday, October 28, 2015 3:41 AM<br>
<b><span style="font-weight:bold">Subject:</span></b> RE: Strange behavior No Gateway address after successful IP lease on ISC DHCP Server 4.1<br>
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<div class="yiv3598624409MsoNormal" id="yui_3_16_0_1_1445971025243_3639"><span id="yui_3_16_0_1_1445971025243_3638" style="font-size:11.0pt">As far as I understand, you can have only one default route and the router must be reachable on your Linux host. Check
whether there is already a default route on your DHCP client host. Also check whether you can ping the router (10.0.0.1, 10.0.0.2 in your case) on your DHCP client host.</span></div>
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<div class="yiv3598624409MsoNormal" id="yui_3_16_0_1_1445971025243_3662"><span style="font-size:11.0pt">Thanks,</span></div>
<div class="yiv3598624409MsoNormal" id="yui_3_16_0_1_1445971025243_3643"><span style="font-size:11.0pt">Judy</span></div>
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<div class="yiv3598624409MsoNormal" id="yui_3_16_0_1_1445971025243_3644"><b><span style="font-size:10.0pt">From:</span></b><span id="yui_3_16_0_1_1445971025243_3704" style="font-size:10.0pt"> dhcp-users-bounces@lists.isc.org [mailto:dhcp-users-bounces@lists.isc.org]
<b>On Behalf Of </b>Muhammad Faisal<br clear="none">
<b>Sent:</b> Tuesday, October 27, 2015 11:10 AM<br clear="none">
<b>To:</b> dhcp-users@lists.isc.org<br clear="none">
<b>Subject:</b> Strange behavior No Gateway address after successful IP lease on ISC DHCP Server 4.1</span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">Hello Experts,</span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">We have configured the DHCP Server using ISC DHCP server version 4.1 on CentOS. The server deployment remain successful and most of the host are acquiring IP address
normally. On of the host is successfully acquiring IP but not the default gateway which is defined in the server as "option routers" parameter under dhcp scope.</span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">I have tried to compare the message of working host with that of problematic one the following differences I have found:</span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt"> </span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">1- Message Size parameter is sent by the problematic client which is a modem Gigaset SX686</span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">2- All the messages are same on both problematic client and normal client </span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">3- DHCP is successfully leasing the IP</span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt"> </span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">I have tried hit and trials but no success. The server is operating with default parameters. Can someone please suggest.</span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt"> </span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"># see 'man 5 dhcpd.conf'</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">#</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">ddns-update-style none;</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">authoritative;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">one-lease-per-client true;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">log-facility local0;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">default-lease-time 600;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">max-lease-time 600;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">get-lease-hostnames false;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"># parameters for LAN</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> subnet 10.0.0.0 netmask 255.255.255.0 {</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> option routers 10.0.0.1, 10.0.0.2;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> option subnet-mask 255.255.255.0;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> option broadcast-address 10.0.0.255;</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> option domain-name-servers 10.0.0.3, 8.8.8.8;</span></b><span style="font-size:10.0pt"></span></div>
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<div id="yiv3598624409yui_3_16_0_1_1445954333556_7090">
<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> option interface-mtu 1500;</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt"> range 10.0.0.4 10.0.0.254;</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><b><span style="font-size:10.0pt">}</span></b><span style="font-size:10.0pt"></span></div>
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<div class="yiv3598624409MsoNormal" style="background:white"><span style="font-size:10.0pt">Regards, Muhammad Faisal.</span></div>
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