I downloaded the latest version of AICCU from: https://noc.sixxs.net/archive/sixxs/aiccu/debian/pool/aiccu_20070115_i386.deb Which I installed on my Debian Etch machine without problems. I am behind a NAT router, but I have redirected all traffic from the router to my Linux machine, so I assumed I could use a static tunnel by enabling the option local_ipv4_override in /etc/aiccu.conf and opening for protocol 41 in my firewall. However, this gave me the following error on startup of AICCU: Unknown configuration statement on line 79 of /etc/aiccu.conf: "local_ipv4_overrid" No, this is not a spelling mistake. The last letter 'e' was missing. I tried moving the line around, making sure there wasn't a problem with newline characters, etc. but to no avail. I tried adding an additional 'e' so the line in /etc/aiccu.conf read: local_ipv4_overridee And now the client didn't complain about the line anymore. Now I got an error about the local address "remote" not being a valid IPv4 address. I changed my tunnel to a Heartbeat tunnel so I didn't need the "local_ipv4_override" option, but after some testing I discovered that my router does not forward protocol 41 to the "Default server" even though ZyXEL support claims that it does. I finally changed my tunnel to AYIYA and now everything works... except that with my current credit balance it will take months before I can get subnet and actually start using my IPv6 connection :) Anyway... my question is if anyone has experienced this behaviour with AICCU (the "local_ipv4_override" option not working)? Regards, Michael