This table determines the behavior of the DHCPv6 client.
Note: Normally client behavior is controlled by the auto-configuration. Only make entries in this table if you want to use the client in stand-alone mode or if there are other specific options that deviate from the default settings.
- Interface name
- Name of the interface on which the DHCPv6 client is working. These can be LAN interfaces or WAN interfaces (remote sites), e.g. "INTRANET" or "INTERNET".
- Operating mode
- Specifies if and how the device enables the client. Possible values are:
- Auto configuration
- The device waits for router advertisements, and then starts the DHCPv6 client. This option is the default setting.
- On
- The device starts the DHCPv6 client as soon as the interface is active, without waiting for router advertisements. The device ignores the specifications from router advertisements.
- Off
- The DHCPv6 client is disabled on this interface. Even if the device receives router advertisements, it will not start the client.
- Rapid commit
- When rapid commit is activated, the client attempts to obtain an IPv6 address from the DHCPv6 server with just two messages. If the DHCPv6 server is configured correspondingly, it immediately responds to this solicit message with a reply message.
- Reconfigure accept
- If the client successfully negotiates a re-configuration (reconfigure) with the server during first contact, the server can request the client to update its address or other information at any time. The mechanism is protected by the so-called Reconfigure Key, so that only the original server with the correct key can make requests to the client. If the client receives a reconfigure message without a valid reconfigure key, the client rejects this invocation. The client supports the Reconfigure Key Authentication Protocol according to RFC 3315 for the options "Renew" and "Information Request", and also "Rebind" as per RFC 6644.This option is enabled by default for WAN interfaces.
- Send own name (FQDN)
- The client sends its own host name (Fully Qualified Domain Name). By default, this option is active on LAN interfaces.
- Request DNS server
- Specifies whether the client queries the DHCPv6 server for DNS servers.Important: You must enable this option in order for the device to obtain information about a DNS server.
- DNS search list
- The client queries the DNS search list.
- Request SNTP server
- Specifies whether the DHCPv6 client requests a list of SNTP servers (Simple Network Time Protocol) from the DHCPv6 server.Important: For this to work, the periodical synchronization with a time server must be enabled as in Configuring the time server under LANconfig.
- Request address
- Determines whether the client should request the DHCPv6 server for an IPv6 address. Note: Only activate this option if addresses configured by the DHCPv6 server via this interface are stateful, i.e. not distributed by SLAAC.
- Request prefix
- Specifies whether the DHCPv6 client requests a desired prefix length from the DHCPv6 server. Activating this option is only necessary if the device itself functions as a router and redistributes these prefixes. This option is enabled by default on WAN interfaces in order for the DHCPv6 client to request a prefix from the provider for use in its local network. This option is disabled by default on LAN interfaces because devices in a local network are more likely to function as clients rather than as routers.
- Prefix length hint
- This is a proposal from the client to the server regarding the length of the prefix requested by the server.
