checkval and != op

[Christian Zoffoli]

Hi to all,
I've configured freeradius with mysql anche checkval and all works as
expected when I try to authenticate users with Calling-Station-ID and :=
operators in radgroupcheck but I cannot use it with != operator.

To sum up I want some accounts to login only on some machines and I
don't want other accounts to login on the above machines.

Can I use checkval also with != operator? ...if not, is there another way?

thank you,
Christian