Docsis 3.0 Modems and Mode of Operation Docsis 3.0 modems will be IPv6 ready (dual stack v4 & v6) When configured on IPv4-only CMTS, Docsis 3.0 modems will be provisioned using IPv4 when configured on IPv6-enable CMTS, Docsis 3.0 modems will be provisioned either using IPv4 or using IPv6. A mode is defined where both IPv4 & IPv6 addresses are available In some deployment where IPv4 address space is an issue, Docsis 3.0 modems will not have both IPv4 & IPv6 addresses at the same time UDP6 IPv6 NIC driver Docsis 3.0 Cable Modem NIC driver UDP4 IPv4 or Docsis 3.0 Cable Modem UDP6 IPv6 NIC driver or Docsis 3.0 Cable Modem UDP4 IPv4 depending on an L2 config message |