[kea-dev] More Kea/OpenWRT integration

Morten Brørup mb at smartsharesystems.com
Thu Jan 29 19:58:18 UTC 2026


> On OpenWRT we support a host having multiple MAC addresses for the same
> IP, to allow people to have laptops with docking stations and WiFi and
> to roam without losing connectivity.

I'm sorry if my question is off-topic, but this scenario got me really curious!

Can you please elaborate about how having the same IP address on Ethernet and Wi-Fi works on the laptop?

Are both interfaces on the laptop active at the same time?
How does the laptop respond to ARP?
Is it controlled by the "metric" on the laptop's route table, or does it respond to ARP depending on the interface where the ARP request was received, or something else?

Which laptop operating systems does it work with? Windows? Mac? Linux?

-Morten



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