The Nominum DHCP server (DCS) supports the exact mechanism described in the collection of documents, except that the data is stored in a TXT record rather than a DHCID record, because we are waiting on the DHCID record. We also implement the older version of the protocol that the ISC server supports, which as David says is only slightly different than the current spec. _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf