SLAAC (IPv6 Auto-Configuration)
SLAAC lets IPv6 hosts auto-configure addresses using router advertisements.
Updated: 2026-03-05
Definition
SLAAC allows IPv6 hosts to generate their own addresses based on network prefixes advertised by routers.
It reduces manual configuration and can work with or without DHCPv6.
Key points
- Uses Router Advertisements (RA)
- Hosts self-generate addresses
- Often paired with DNS options via DHCPv6
Common mistakes
- Forgetting that security controls must cover IPv6 too.
- Misunderstanding RA and default gateway behavior.
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