??? See RFC 3736, ???Stateless
Dynamic Host Con?¬?guration Protocol (DHCP) Service for IPv6.???
1. Router Solicitation
Requests Prefix
3. Host Autoconfigured Address:
Prefix Received + Link-Layer Address Sends Network-Type Information
(Prefix, Default Route, ...)
2. Router Advertisement
282 Chapter 7: Managing Address Spaces with NAT and IPv6
The process for acquiring con?¬?guration data for a DHCPv6 client is similar to that in IPv4,
with a few exceptions. Initially, the client must detect the presence of routers on the link
by using neighbor discovery messages. If at least one router is found, then the client
examines the router advertisements to determine if DHCPv6 should be used. If the router
advertisements enable the use of DHCPv6 on that link or if no router is found, then the
client starts a DHCP solicit phase to ?¬?nd a DHCP server.
DHCPv6 uses multicast for many messages. When the client sends a solicit message, it
sends the message to the ALL-DHCP-Agents multicast address with link-local scope.
Agents include both servers and relays.
When a DHCP relay forwards a message, it can forward it to the All-DHCP-Servers
multicast address with site-local scope.
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