A network architect is designing an enterprise IPv6 deployment and reviewing address allocation strategies and autoconfiguration modes. Match each IPv6 deployment mechanism or address scope on the left with its exact functional operation and protocol behavior on the right.
- Stateless Address Autoconfiguration (SLAAC) with Stateless DHCPv6Uses Router Advertisements with M=0 and O=1 flags to supply the network prefix via SLAAC while directing endpoints to obtain auxiliary options (such as DNS) from DHCPv6.
- Stateful DHCPv6 DeploymentUses Router Advertisements with M=1 and O=1 flags to instruct endpoints to obtain both their IPv6 address lease and auxiliary configuration parameters directly from a DHCPv6 server.
- Link-Local Unicast AddressingMandatory fe80::/10 block address utilized exclusively for single-link neighbor discovery, router adjacencies, and local communication without multi-hop routing.
- Unique Local Addressing (ULA)Uses the fc00::/7 prefix (typically implemented as fd00::/8) to provide globally unique, non-publicly routable IPv6 addressing across internal enterprise subnets.
Answer
SLAAC with Stateless DHCPv6 matches the configuration using RA flags M=0 and O=1; Stateful DHCPv6 Deployment matches the configuration using RA flags M=1 and O=1; Link-Local Unicast Addressing matches the fe80::/10 block for single-link communication and NDP; Unique Local Addressing matches the fc00::/7 block for non-public internal routed communication.
Each IPv6 mechanism is paired strictly according to standard RFC specifications: SLAAC with Stateless DHCPv6 relies on M=0 and O=1 RA flags; Stateful DHCPv6 requires M=1; Link-Local addressing uses the fe80::/10 prefix exclusively for local-link functions; and Unique Local Addresses utilize fc00::/7 for non-public internal routed communication.
Step-by-Step Solution
Key Concept
IPv6 Addressing Scopes and Neighbor Discovery RA Flag Autoconfiguration