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<blockquote type="cite" class="">Just think given the above, 200 request packets/second relayed to every DHCP server on the network 8-O That’s some serious wastage of resource.<br class="">
As you say, simplest to just firewall the packets and ignore it.<br class="">
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Tried that today, unfortunately to no avail. macOS has pf installed, but obviously pf does not / cannot block DHCP packets or the other way round, dhcpd grabs the DISCOVERs before pf rules come into effect. So I’m back to field one…<br class="">
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Any other ideas?</div>
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<div>I'd be inclined to make a dhcpd.conf-not-our-subnets containing subnet declarations with no pools for all the other subnets that show up in your logs and "include" it into your dhcpd.conf .</div>
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<div>I've had mixed success with "ignore booting" over the years (some versions of the server it works, some it doesn't and I still get logs), but I'd definitely put it into each of the subnet declarations for wishful thinking. I know you already tried it
in an individual host declaration, but still worth trying in a subnet.</div>
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<div>Lacking an "ignore unknown subnets" configuration mechanism, it seems like this might work and be next best.</div>
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<div class="">-- </div>
<div class="">Keith Neufeld</div>
<div class="">Director of Networking and Telecommunications</div>
<div class=""><span style="text-align: -webkit-auto;" class="">Wichita State University</span></div>
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