Stateless Dhcpv6 Configuration; Introduction - HP A7500 Series Configuration Manual

Figure 53 Using the Rebind message for address/prefix lease renewal
As shown in
out a Renew message at T1, it multicasts a Rebind message to all DHCPv6 servers at T2 (that is, when
80% preferred lifetime expires). Then the DHCPv6 server responds with a Reply message, informing the
client about whether or not the lease is renewed.
If the DHCPv6 client receives no response from the DHCPv6 servers, the client stops using the
address/prefix when the valid lifetime expires.
NOTE:
For more information about the valid lifetime and the preferred lifetime, see the chapter "IPv6 basics
configuration."

Stateless DHCPv6 configuration

Introduction

After obtaining an IPv6 address/prefix, a device can use stateless DHCPv6 to obtain other configuration
parameters from a DHCPv6 server. This application is called stateless DHCPv6 configuration.
With an IPv6 address obtained through stateless address autoconfiguration, a device automatically
enables the stateless DHCPv6 function after it receives an RA message with the managed address
configuration flag (M flag) set to 0 and with the other stateful configuration flag (O flag) set to 1.
NOTE:
Stateless address autoconfiguration means that a node automatically generates an IPv6 address based on
the information obtained through router/prefix discovery. For more information, see the chapter "IPv6
basics configuration."
Figure 53, if the DHCPv6 client receives no response from the DHCPv6 server after sending
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