[Kea-users] ignoring DHCP-Requests which have set the BROADCAST flag

Stefan Berger Stefan.Berger at wvnet.eu
Thu Jun 4 08:02:19 UTC 2020

>I can see at least two easy ways: use a firewall (the flag is at a fixed offset so trivial to find) 
>or write a hook for Kea (install it at the pkt4_receive callout point and return DROP when the query4->getFlags() has FLAG_BROADCAST_MASK set). 
>As the broadcast flag has a function in the protocol perhaps it is possible to tweak the configuration 
>so they failed to be served (e.g. responses do not reach them) but a direct way is more reliable.

Hi Francis,

thanks for the input - as i'm not a coder i will check the "iptables" way


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