On Tue, Jun 7, 2022 at 3:15 PM Erik Edwards via Kea-users <kea-users at lists.isc.org> wrote: > > I second this. I have several network switches that choke on the returned option. This appears to be RFC-compliant behavior on Kea's part, based on section 3 of RFC 6842: https://www.rfc-editor.org/rfc/rfc6842.