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Linux sets up a virtual interface for every VLAN defined. So what he means is that he has one physical interface configured with different VLANs. That should work: Kea can be configured to listen on the virtual interfaces. It does mean the server needs an
IP address in each VLAN, and so on each virtual interface.</div>
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It also, of course, depends on the VLAN tagged broadcast packets arriving on the physical interface which appears to be the problem here. That can be confirmed with tcpdump.</div>
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Graham</div>
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