Rewrite domain

[David Rodríguez Fernández]

Hi,

I have a wifi with wpa2, with peap and mschap2, with db users with
active directory, and all is working fine if my users log in with:

WINDOWSDOMAIN\userlogin

as username, but if the users auth as userlogin, the server reply:
Auth: Login incorrect (rlm_mschap: No such user (0xc0000064)):

There's a method to rewrite the login name to add WINDOWSDOMAIN\ to
the beginning of login or to make that radius add a default domain to
all users?

Thanks.