Hi everybody, at first I want to thank Arran and Alan for their help with my last post. Good job! Had trouble getting the lists reply's, but solved now. I am curious if somebody could share information how to get FR as DHCP with option 82 authentication up and running. Couldn't find much information in provided sample files and on the net. My own experiments with auth configs were not particularly successful. The key I am missing is the link between having DHCP-Relay-Circuit-Id in DHCP-Request and DHCP-Discover messages and kicking in some kind of auth in order to return a DHCP-Offer/Ack message including a client IP out of the configured IP pools. Backend is mysql. I have the feeling that most users straight heading for rlm_perl and not using the ppp/chap/pap alike chain. This I would understand since the handshakes differ. Confirmation of this thesis would help me as well, so I can stop searching and start coding ;o) Any comment much appreciated! Cheers, Marco