DHCPv6

DHCPv6 assigns IPv6 configuration information; it can be stateful or stateless.

Updated: 2026-03-05

Definition

DHCPv6 can provide IPv6 addresses (stateful) or only extra options like DNS (stateless).

It complements SLAAC in many deployments.

Key points

Stateful vs stateless modes
Often used for DNS options
Works with router advertisements (RA flags)

Common mistakes

Expecting DHCPv6 to always provide the default gateway (routers do).
RA/DHCPv6 flags mismatch causing inconsistent host configs.

Related exams

Cisco CCNA (200-301)

Free CCNA 200-301 mini test. Continue in the app for offline packs and detailed explanations.

CompTIA Network+ (N10-009)

Free Network+ N10-009 mini test. Continue in the app for offline packs and detailed explanations.

Related terms

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