Configuration Guide    DHCPv6 Configuration 
The DHCPv6 client gets relevant parameters based on interface, such as Domain Name Server, 
SNTP server. Relevant parameters configurations depend on the validity of interface.   
Introduction to the DHCPv6 Relay 
The DHCPv6 relay forwards DHCPv6 messages between the DHCPv6 server and the DHCP 
client. When the DHCP server and the DHCP client are not in the same physical network, the 
DHCP relay is responsible for forwarding the DHCP solicit and reply messages. The forwarding 
process is different from routing forwarding, which features transparent transmission. Generally, 
the router will not modify the contents of IP packets. Upon receiving the DHCP message, the 
DHCP relay will regenerate and forward another one.     
The DHCP relay is just like a DHCP server for the DHCP clients and a DHCP client for the 
DHCP server.     
DHCPv6 Configuration Task List   
The DHCPv6 configuration tasks include:     
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Configure the DHCPv6 Client 
This task involves how to enable DHCPv6 client function and prefix solicitation on the interface.     
To configure the DHCPv6 Client, run the following commands: 
For example:   
Ruijie# configure terminal 
Ruijie(config)# interface fastethernet 0/1 
Ruijie(config-if)# ipv6 dhcp client pd pd_name