[RADIATOR] User-Name is empty in reply

[Markus Ludwig Grandpre]

Hello list,

when performing inner authentication User-Name attribute value is always
empty in reply:

Code:       Access-Accept
Identifier: 14
Authentic:  <212>[#<152><3><140><169><207>;U;<217>gM<190><8>
Attributes:
        User-Name = ""
        EAP-Message = <3><7><0><4>
...

Format of incomming username and suggested User-Name format in reply is:

  x.y at realm

AuthBy definition is:

<AuthBy LDAP2>
  ...
  UsernameAttr			cn
  UsernameMatchesWithoutRealm
  ...
  AddToReply             	User-Name=%U
  EAPType			MSCHAP-V2
  ...
 </AuthBy>


Can you please explain to me why %U (also %u and %n) is empty.
Markus