(Optional) Locking an IPv6 Address Pool

This section describes how to lock an IPv6 address pool so that the address pool cannot be used to assign IPv6 addresses to new users.

Context

An IPv6 address pool with an in-use IPv6 address cannot be deleted. Therefore, configure the drain function to lock the IPv6 address pool before you delete the address pool. After an IPv6 address pool is locked using the lock drain command, DHCP Renew or Rebind messages from online users will be discarded. The IPv6 address pool can be deleted after all online users using the address pool go offline upon lease expiry. If you only need to disable an IPv6 address pool so that the address pool will not be used to assign IPv6 addresses to new users but online users can still use assigned IPv6 addresses, configure the lock function to lock the address pool using the lock command.

Procedure

Run system-view
The system view is displayed.
Run ipv6 pool pool-name [ bas { local | remote | delegation | relay } ]
The IPv6 address pool view is displayed.
Perform either of the following configurations as needed:
- Configure the drain function to lock the IPv6 address pool.
  1. Run lock drain
    
    The IPv6 address pool is locked so that the address pool cannot be used to assign IPv6 addresses to new users and Renew or Rebind messages from online users using the address pool are discarded.
    
    This command does not take effect for ND users in remote address pool scenarios.
  2. Run commit
    
    The configuration is committed.
- Configure the lock function to lock the IPv6 address pool.
  1. Run lock
    
    The IPv6 address pool is locked so that the address pool cannot be used to assign IPv6 addresses to new users but Renew or Rebind messages from online users can still be processed.
  2. Run commit
    
    The configuration is committed.