The value of tmnxWlanGwSoftGreIfLearnApMac enables or disables the sending of ARP or ND packets on the wlan-gw GRE tunnel upon certain events. The target IP address in the ARP/ND packet will be the endpoint IP address of the AP. The ARP/ND response from the AP should contain the AP MAC, which subsequently can be reported in called-station-id. When enabled, this will be sent for following events: - CPM: Mobility to an AP for which the AP-MAC is not yet known. - CPM: RS-triggered authentication on an AP for which the AP-MAC is not yet known - ISA: Any mobility event - ISA: Any authentication where the AP-MAC is not yet known (e.g. from radius proxy cache, DHCP circuit-id, ...). If the optional keyword 'delay-authentication' is provided, the authentication will be delayed until the ARP/ND is answered or timed out, after which the AP-MAC can be included in authentication. This configuration is ignored for l2-ap and l2tpv3 access. The 'no' form of the command disables this mechanism.