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<p class="MsoNormal"><span lang="DE">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">it looks like we have issue with configuring DHCP DNS OPT 6 for certain interface.<br>
Here are some examples:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">interface=eth2.11<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-range=interface:eth2.11,10.11.1.2,10.11.1.201,7200<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2.11,3,10.11.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2.11,6,10.11.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">interface=eth2.12<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-range=interface:eth2.12,10.12.1.2,10.12.1.201,7200<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2.12,3,10.12.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2.12,6,10.12.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">interface=eth2<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-range=eth2,10.0.1.2,10.0.1.201,7200<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2,3,10.0.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2,6,10.0.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In such setup, dnsmasq does not including
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OPTION: 6 ( 4) DNS server 10.0.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Into DHCPACK messages send to eth2, but perfectly sending correct DNS IPs to eth2.11 and eth2.12.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I found that even if I have one interface configured and using configuration option of<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=interface:eth2,6,10.0.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">instead of<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">dhcp-option=6,10.0.1.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I will not get DNS server in responses. Router IP BTW always correct with both variants of configuration.<br>
<br>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">As for me it looks like a bug.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanx for looking into it.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Taras Taranenko<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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