Using the default acct_unique policy from policy.d/accounting, I got this: (14) # Executing section preacct from file /etc/raddb/sites-enabled/default (14) group preacct { (14) - entering group preacct {...} (14) [preprocess] = ok (14) policy acct_unique { (14) - entering policy acct_unique {...} (14) ? if ("%{string:Class}" =~ /ai:([0-9a-f]{32})/i) LITERAL: %{string:Class} LITERAL: %{string:Class} --> %{string:Class} EXPANSION: %{string:Class} MOD: string --> LITERAL: Class} xlat aprint 2 xlat aprint 0 expand mod string --> 'Class' (14) ERROR: Evaluation of condition failed for some reason. (14) else else { (14) - entering else else {...} (14) update request { -- Stelian Ionescu a.k.a. fe[nl]ix Quidquid latine dictum sit, altum videtur. http://common-lisp.net/project/iolib