how to setup MAC based authentication with LDAP

[Alan Buxey]

Look:

Sending Access-Request Id 173 from 0.0.0.0:43364 to 127.0.0.1:1812
	User-Name = '00-1b-ea-ce-bb-a0'
	User-Password = '00-1b-ea-ce-bb-a0'
	NAS-IP-Address = 192.168.248.252
	NAS-Port = 0
	Message-Authenticator = 0x00
Received Access-Reject Id 173 from 127.0.0.1:1812 to 127.0.0.1:43364
length 20
(0) Expected Access-Accept got Access-Reject

Its 'not being expanded' because it's not actually being sent.  Alan D has already told you this.  Use the required radtest config to send a CSI or use another testing tool.  Your choice.  But if CSI isn't being sent then there's nothing the server can do to magically fix that!  

alan