<div dir="ltr">This has come up before. <a href="https://blueprints.launchpad.net/neutron/+spec/dhcp-options-per-subnet">https://blueprints.launchpad.net/neutron/+spec/dhcp-options-per-subnet</a><div><br></div><div>Can you file an RFE (request for enhancement) bug so we can discuss it in the Neutron drivers meeting to see if it fits in with the plans this cycle?</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 2, 2015 at 10:16 AM, Sam Betts (sambetts) <span dir="ltr"><<a href="mailto:sambetts@cisco.com" target="_blank">sambetts@cisco.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p style="margin:0px;font-size:11px;font-family:Menlo">For the ironic inspector to be able to inspect nodes that we don't know the</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">mac addresses for we have to run a DHCP rule that will respond to all mac</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">addresses for PXE booting the inspector ramdisk. In order to provide this </p>
<p style="margin:0px;font-size:11px;font-family:Menlo">functionality right now we are running our own instance of dnsmasq,</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">configuring it independently and manually plumbing it into OpenStack. At the</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">summit we discussed that we would like to move away from managing our own DHCP</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">server and would like to take advantage of the existing DHCP server implemented</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">by neutron. However this would require being able to set global/wildcard DHCP</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">rules in neutron which I'm aware isn't possible right now, as DHCP options are</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">only set on ports.</p>
<p style="margin:0px;font-size:11px;font-family:Menlo;min-height:13px"><br>
</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">A solution that we came up with would be the ability to set DHCP options on a</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">neutron network which would apply to
<i>any</i> machine that made a DHCP request in</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">that network, however if any DHCP options were set on a port they would</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">override the network level options. This way we could setup a PXE option at</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">the network level for PXE booting any machine in that network that requests it.</p>
<p style="margin:0px;font-size:11px;font-family:Menlo;min-height:13px"><br>
</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">We'd like to get some opinions on this idea from the neutron team, we think</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">that if implemented correctly there could be uses for it outside of the</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">inspector use case. We look forward to any feedback.</p><span class="HOEnZb"><font color="#888888">
<p style="margin:0px;font-size:11px;font-family:Menlo;min-height:13px"><br>
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<p style="margin:0px;font-size:11px;font-family:Menlo">Sam <span style="background-color:#00e6e5">
(</span>sambetts<span style="background-color:#00e6e5">)</span></p>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div>Kevin Benton</div></div>
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