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Question

Difficulty: EasyIPv6 Addressing and Deployment

Which autoconfiguration mechanism allows an IPv6 host to dynamically generate its own unicast IP address using network prefix information received in Router Advertisement (RA) messages without requiring a stateful DHCP server?

Answer: SLAAC / Stateless Address Autoconfiguration / stateless address autoconfiguration

Answer

SLAAC (Stateless Address Autoconfiguration)
SLAAC (Stateless Address Autoconfiguration) allows an IPv6 client to automatically generate its own globally unique or link-local address by combining the IPv6 prefix provided by a local router via ICMPv6 Router Advertisement (RA) messages with a locally derived 64-bit interface identifier (such as EUI-64 or random privacy address).

Step-by-Step Solution

1
Identify the IPv6 address assignment requirement
The scenario describes dynamic host address generation using Router Advertisement (RA) messages without a stateful DHCP server.
IPv6 introduces a native mechanism for hosts to autoconfigure network layer parameters directly from local router advertisements.
2
Match the protocol mechanism to its standardized term
Stateless Address Autoconfiguration (SLAAC) is the protocol mechanism that combines the advertised network prefix with an interface identifier.
SLAAC requires no state management on a central server, distinguishing it from stateful DHCPv6.

Key Concept

Stateless Address Autoconfiguration (SLAAC)
Estimated Time:45s
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Topics

IPv6 Addressing and Deployment

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