Interface-ID

The interface ID uniquely identifies the interface used by the client to make a DHCPv6 request.

You can use the following variables:

• %%: Inserts a percent sign.
• %c: Adds the MAC address of the interface where the relay agent received the DHCP request. If a WLAN-SSID is involved, then this is the corresponding BSSID.
• %i: Inserts the name of the interface on which the relay agent received the DHCP request.
• %n: Inserts the name of the DHCP relay agent as specified under Setup > Name.
• %v: Inserts the VLAN ID of the DHCP request packet. This VLAN ID is sourced either from the VLAN header of the DHCP packet or from the VLAN ID mapping for this interface.
• %p: Inserts the name of the Ethernet interface that received the DHCP packet. This variable is useful for devices featuring an Ethernet switch or Ethernet mapper, because they can map multiple physical interfaces to a single logical interface. For other devices, %p and %i are identical.
• %s: Inserts the WLAN SSID if the DHCP packet originates from a WLAN client. For others clients, this variable contains an empty string.
• %e: Inserts the serial number of the relay agent, to be found for example under Status > Hardware-Info > Serial number.