DOCSIS-CPE_3.5.1-A.2 is an auxiliary schema which defines CPE information. Revision History: 3.5.1-A.1 Initial version. 3.5.1-A.2 Revised version includes ECN OSSIv3.0-N-10.0914-3 and OSSIv3.0-N-10.0928-1 and published as I12. Data-Over-Cable Service Interface Specifications: Operations Support System Interface Specification SP-CM-OSSIv3.0-I12-100611, Annex C. Contains the MAC address of the CPE. Contains IPv4 addresses of the CPE. Each IP Address is encoded as ipdr:ipV4Addr. If the CPE IPv4 address is unassigned or unknown, it contains zero length hexBinary. Contains IPv6 addresses of the CPE. Each IP Address is encoded as ipdr:ipV6Addr. If the CPE IPv6 address is unassigned or unknown, it contains zero length hexBinary. Contains the Fully Qualified Domain Name (FQDN) of the CPE. If the CPE FQDN is unassigned or unknown, it contains an empty string.