Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
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R. Droms, J. Bound, B. Volz, T. Lemon, C. Perkins, M. Carney · 2003-07
Abstract
RFC 3315 defines DHCPv6, a stateful address configuration protocol for IPv6 networks. DHCPv6 enables IPv6 hosts to obtain addresses, prefixes, and configuration parameters from a DHCPv6 server. Unlike DHCPv4, DHCPv6 uses link-local multicast addresses for client-server communication and operates on UDP ports 546 (client) and 547 (server).
Why This RFC Matters
As the Internet transitions from IPv4 to IPv6, DHCPv6 provides the stateful address configuration mechanism that network administrators expect from DHCP. While IPv6 also supports Stateless Address Autoconfiguration (SLAAC) via Router Advertisements, DHCPv6 gives administrators fine-grained control over address assignment, DNS server distribution, and other parameters — capabilities critical in enterprise environments. RFC 3315 was superseded by the more comprehensive RFC 8415, which unified DHCPv6 and prefix delegation into a single specification.