<div class="gmail_quote">Hello,<br><br>After the test which had worked on my machine as server, and other machines as guests, I had to deploy dnsmasq on our server. I supposed to be ready, but after the dhcp+dns stop and dnsmasq start, my conf file didn't work.<br>
Our config : We have 2 FAI box (one SDSL, one ADSL), connected to a router, which is connected to our switch, on which are connected our machines, and our dnsmasq server.<br>My conf file :<br><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">################################################################</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Local network configuration file for dnsmasq.</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># See /etc/dnsmasq.conf.save for all options with explanations.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">################################################################</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Never forward plain names (without a dot or domain part)</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">#domain-needed</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># Never forward addresses in the non-routed address spaces.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">bogus-priv</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Set this (and domain: see below) if you want to have a domain</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># automatically added to simple names in a hosts-file.</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">expand-hosts</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Change this line if you want dns to get its upstream servers from</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># somewhere other that /etc/resolv.conf</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">resolv-file=</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># If you don't want dnsmasq to read /etc/resolv.conf or any other</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># file, getting its servers from this file instead (see below), then</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># uncomment this.</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">no-resolv</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># DNS servers</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">server=89.2.0.1</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">server=89.2.0.2</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">server=212.30.96.123</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">server=213.203.124.147</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Allow the random selection of dns server</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">all-servers</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Domain name for dnsmasq.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">domain=<a href="http://private.information.com" target="_blank">private.information.com</a></span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># If you want dnsmasq to listen for DHCP and DNS requests only on</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># specified interfaces (and the loopback) give the name of the</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># interface (eg eth0) here.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Repeat the line for more than one interface.</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">interface=eth0</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Enable the integrated DHCP server from 10.1.0.180</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># to 10.1.0.200 with 12h leases-times</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-range=eth0,10.1.0.180,10.1.0.200,12h</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Netmask (option 1)</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-option=1,255.255.255.0</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Gateway (option 3)</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-option=3,10.1.0.254</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># DNS Servers (option 6): Main: 10.1.0.1, Second: 10.1.0.254</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-option=6,10.1.0.1,10.1.0.254</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Statics IP Addresses</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@macOfServer1>,server1,10.1.0.1</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">###########</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Devices #</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">###########</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Wireless</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,wireless1,10.1.0.3</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,wireless2,10.1.0.4</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Printers</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer1,10.1.0.26</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer2,10.1.0.27</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer3,10.1.0.28</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer4,10.1.0.29</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer5,10.1.0.30</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,printer6,10.1.0.40</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Server2</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,server2,10.1.0.50</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># VMs</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,vm1,10.1.0.70</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,vm2,10.1.0.71</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,vm3,10.1.0.72</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">############</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace"># Machines #</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">############</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Chambery</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateName,10.1.0.101</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateName,10.1.0.102</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateName,10.1.0.103</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateName,10.1.0.105</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateName,10.1.0.106</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">...</span><br style="font-family:courier new,monospace"><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Chambery Wireless</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateNamew,10.1.0.131</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateNamew,10.1.0.132</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateNamew,10.1.0.134</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateNamew,10.1.0.136</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">dhcp-host=<@mac>,privateNamew,10.1.0.137</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">...</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Paris Wireless</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">#dhcp-host=<@mac>,privateNamew,10.2.0.137</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">#dhcp-host=<@mac>,privateNamew,10.2.0.138</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">#dhcp-host=<@mac>,privateNamew,10.2.0.139</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">#dhcp-host=<@mac>,privateNamew,10.2.0.140</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">...</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Set the DHCP server to authoritative mode.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">dhcp-authoritative</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Set the cachesize here.</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">cache-size=6000</span><br style="font-family:courier new,monospace">
<br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># For debugging purposes, log each DNS query as it passes through</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># dnsmasq (in syslog).</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">log-queries</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace"># Log lots of extra information about DHCP transactions (in syslog).</span><br style="font-family:courier new,monospace">
<span style="font-family:courier new,monospace">log-dhcp</span><br style="font-family:courier new,monospace"><span style="font-family:courier new,monospace">#########################</span><br><br>It should works on the paper, because this kind of config works on my private test network, but on our internal company config, it doesn't works. I didn't compare with our dhcp+dns config, but I suppose I forget to provide something, I don't know what it is.<br>
<br>Have you got an idea ?<br><br>Thank you guys.<div class="im"><br clear="all"><div style="min-height:60px;line-height:17px;margin:0pt;padding:10px 0pt;font-family:'Lucida Grande',Verdana,Arial,Sans-Serif;font-size:10px;color:rgb(51, 51, 51);min-width:530px">
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<br><br></div><div><div></div><div class="h5"><div class="gmail_quote">2011/9/1 Jérémie SYLVAND <span dir="ltr"><<a href="mailto:jsylvand@leadformance.com" target="_blank">jsylvand@leadformance.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
IT WORKS !!!<br><br>I didn't have seen that machines on my network could effectively go to internet (by ip addresses) because my dnsmasq server provided all the conf, the gateway too.<br>But because my dnsmasq server couldn't go to internet, (but he really wanted to forward his dns request it didn't know), all machines couldn't resolve a name request.<br>
<br>The problem was simple, when I have fixed my ifconfig on my dsnmasq server, I didn't provide the gateway... NOOB !!<br><br>Sorry to have loose your time, it was an idiot error.<br><br>Regards<div><br clear="all">
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<br><br></div><div><div></div><div><div class="gmail_quote">2011/8/31 Don Muller <span dir="ltr"><<a href="mailto:don@djmuller.com" target="_blank">don@djmuller.com</a>></span><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)">Can you ping by address?<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)"><u></u> <u></u></span></p>
<div style="border-width:medium medium medium 1.5pt;border-style:none none none solid;border-color:-moz-use-text-color -moz-use-text-color -moz-use-text-color blue;padding:0in 0in 0in 4pt"><div><div style="border-width:1pt medium medium;border-style:solid none none;border-color:rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color;padding:3pt 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10pt">From:</span></b><span style="font-size:10pt"> <a href="mailto:dnsmasq-discuss-bounces@lists.thekelleys.org.uk" target="_blank">dnsmasq-discuss-bounces@lists.thekelleys.org.uk</a> [mailto:<a href="mailto:dnsmasq-discuss-bounces@lists.thekelleys.org.uk" target="_blank">dnsmasq-discuss-bounces@lists.thekelleys.org.uk</a>] <b>On Behalf Of </b>Jérémie SYLVAND<br>
<b>Sent:</b> Tuesday, August 30, 2011 4:36 AM<br><b>To:</b> Frederick C. Damen<br><b>Cc:</b> <a href="mailto:dnsmasq-discuss@thekelleys.org.uk" target="_blank">dnsmasq-discuss@thekelleys.org.uk</a><br><b>Subject:</b> Re: [Dnsmasq-discuss] DNSmasq forwarding to DNS doesn't works<u></u><u></u></span></p>
</div></div><div><div></div><div><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Hello,<br><br>I can ping my gateway (the box on the same network) but with a ping to the DNS server it told me Network is unreachable.<br>
I'm looking for what could make the network unreachable.<br>Thank you.<br><br>Regards,<br clear="all"><u></u><u></u></p><div><div class="MsoNormal" style="text-align:center;line-height:12.75pt" align="center"><span style="font-size:7.5pt;color:rgb(51, 51, 51)"><hr style="color:white" align="center" noshade size="2" width="100%">
</span></div><p class="MsoNormal" style="line-height:12.75pt"><b><span style="font-size:8.5pt;color:rgb(51, 51, 51)">Jeremie SYLVAND | System & Network Assistant</span></b><span style="font-size:7.5pt;color:rgb(51, 51, 51)"><br>
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</span></a><u></u><u></u></span></p></div></div><p class="MsoNormal" style="margin-bottom:12pt"><br><br><u></u><u></u></p><div><p class="MsoNormal">2011/8/26 Frederick C. Damen <<a href="mailto:fred@damen.org" target="_blank">fred@damen.org</a>><u></u><u></u></p>
<p class="MsoNormal">from the fedoraserver machine try<br>ping 89.2.0.1<br>traceroute 89.2.0.1<br>telnet 89.2.0.1 53<br>this should tell you if you at least have conectivity;<br>repeat with each upstream dns server IP address.<br>
<br>If your (r)syslog log level is set higher than the log-queries then they<br>will not make it to the (r)syslog file. Try using the<br>--log-facility=/tmp/dnsmasq-queries<br>Then try ping <a href="http://google.com" target="_blank">google.com</a><br>
<br>Do not put the IP address of you ethx IP addresses in /etc/resolv.conf.<br> Every machine can refer to its self as 127.0.0.1. dnsmasq is smart<br>enough to ignore this address and not use it as an upstream dns server.<br>
I have not seen anything stating that dnsmasq will ignore the ethx IP<br>address as a upstream dns server. Besides 127.0.0.1 address should<br>always work on the local machine even if your networking is all screwed up.<br>
<br>Fred<u></u><u></u></p><div><div><p class="MsoNormal"><br>On 08/26/2011 10:29 AM, Matthias Andree wrote:<br>> Am 26.08.2011 17:15, schrieb Jérémie SYLVAND:<br>>> Hello<br>>><br>>> Thank you for your answers.<br>
>><br>>> I have tried what you told me, in different thing :<br>>> using resolv.conf with only 127.0.0.1<br>>> with 127.0.0.1 and one of my ISP nameserver<br>>><br>>> Not using resolv.conf by the line no-resolve in the dnsmasq.conf :<br>
>> with and without this line : server=127.0.0.1<br>>> and with all my ISP nameserver addresses<br>>> server=89.2.0.1<br>>> server=89.2.0.2<br>>> server=212.30.96.123<br>>> server=213.203.124.147<br>
>> in the dnsmasq.conf<br>>><br>>> And it still doesn't works<br>>><br>>> My logs :<br>>><br>>> # tail -f /var/log/messages<br>>> Aug 26 16:55:23 fedoraserver abrtd: Corrupted or bad crash<br>
>> /var/spool/abrt/ccpp-1314370523-6770 (res:2), deleting<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7256]: exiting on receipt of SIGTERM<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: started, version 2.52<br>
>> cachesize 6000<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: compile time options: IPv6<br>>> GNU-getopt DBus no-I18N DHCP TFTP<br>>> Aug 26 16:58:02 fedoraserver dnsmasq-dhcp[7293]: DHCP, IP range<br>
>> 192.168.0.180 -- 192.168.0.200, lease time 12h<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: using nameserver<br>>> 213.203.124.147#53<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: using nameserver<br>
>> 212.30.96.123#53<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: using nameserver 89.2.0.2#53<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: using nameserver 89.2.0.1#53<br>>> Aug 26 16:58:02 fedoraserver dnsmasq[7293]: read /etc/hosts - 3 addresses<br>
><br>> OK, so the nameserver configuration works, but it has not logged any<br>> queries that it would have forwarded so far - check if there are any<br>> further down.<br>><br>> Please check:<br>><br>
> - if bind-interfaces makes any difference<br>><br>> - possibly remove the interface configuration tying dnsmasq to eth0 just<br>> to see if it helps<br>><br>> - your resolv.conf on the fedoraserver should point to the primary eth0<br>
> address<br>><br>> - Firewall configuration<br>><br>> - /etc/resolv.conf and /etc/host.conf on the clients<br>><br>> - possibly use wireshark or tcpdump to check port 53 traffic (possibly<br>> check various interfaces)<br>
><u></u><u></u></p></div></div><div><div><p class="MsoNormal">> _______________________________________________<br>> Dnsmasq-discuss mailing list<br>> <a href="mailto:Dnsmasq-discuss@lists.thekelleys.org.uk" target="_blank">Dnsmasq-discuss@lists.thekelleys.org.uk</a><br>
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