local auth always fails

[Duki46]

Hi 
I am using the latest radiusclient
And I'm using radlogin for authentication
Radius authentication works fine
But local auth always fails (against /etc/passwd /etc/shadow)
If I use normal login (e.g /bin/login)
Everything works fine 
When use radlogin as local auth instead ,It  always  fails,
Any help?ASAP!
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