wfLapbPktDDNIpAddr 1.3.6.1.4.1.18.3.5.9.4.5.1.51

If the wfLapbPktNetaddrType is DDNTYPE or DDN_BFE this is the user supplied local IP address. The router will convert this to the corresponding X121 address and the X121 address value will be put in wfLapbPktNetaddr attribute.