For me, VyOS Stream 2026.03 works on EVE-NG. However, it has security vulnerabilities. It's better to use v1.4.4-S1 or v1.5.0-S1.

Versions up to v1.3.8 are not affected. However, from v1.4.x onwards, including v1.5.0 and Rolling releases, all versions are affected.

I have tested all three current branches, and here are my findings:

Hi Fransking, For some reason, Kea is just not playing nice with VIFs. Related: T8547. It’s quite striking that such a fundamental service as a DHCP server is not working correctly in this branch. The integration between the Kea engine and VyOS’s interface abstraction layer seems to have serious gaps, especially for unicast traffic.

In "static-mapping", mac-address is just "mac" in v1.5.0. Check the syntax: DHCP Server. Delete empty nodes.

Hi! Could you share your DHCP configuration and the generated file? Please provide the output of

show configuration commands | strip-private | match dhcp

and the content of

I have performed a final set of aggressive tests to rule out any network or mask calculation issues. The results confirm a deep-seated logic error in Kea's unicast handling on VyOS 1.5.0.