HP-UX IP Address and Client Management Administrator's Guide HP-UX 11i v2, HP-UX 11i v3

Table 1-18 DHCPv6 Message Types (continued)
DescriptionMessage Type
Clients use this message to return one or more IP addresses to
servers.
RELEASE
A client sends a DECLINE message to a server to indicate that the
client has determined that one or more addresses assigned by the
server are already in use on the link to which the client is connected.
DECLINE
Servers send his message to inform clients that the server has new
or updated configuration parameters, and that the clients need to
initiate a Request/Reply transaction with the servers in order to
receive the updated information.
RECONFIGURE
A client sends an INFORMATION-REQUEST message to a server to
request configuration parameters without the assignment of any
IP addresses to the client.
INFORMATION-REQUEST
A relay agent uses this to forward client messages to servers.
RELAY-FORW
A server sends a RELAY-REPL message to a relay agent containing
a message that the relay agent delivers to a client. The RELAY-REPL
message can be relayed by other relay agents for delivery to the
destination relay agent.
The server encapsulates the client message as an option in the
RELAY-REPL message, which the relay agent extracts and relays
to the client.
SERVER-FORWARD
Multiple IP Address Request
DHCPv6 allows clients to request multiple IP addresses to configure an interface.
Configuration Parameters from a DHCPv6 Server
DHCPv6 clients do not need to obtain all the configuration parameters for an interface from the
same DHCPv6 server. They can communicate with different servers within the same DHCP
domain to obtain this information.
Reconfiguration Messages
The DHCPv6 server sends reconfiguration messages to the client to inform the client that the
server has new or updated configuration parameters. It also indicates that the client can initiate
a Request or Reply transaction with the server in order to obtain the new information. The clients
listen on a specific port to receive the DHCP Reconfigure messages from the server.
DHCPv6 Files
Table 1-19 describes the files and daemons that the DHCPv6 software contains.
DHCPv6 Overview 51