can't re-use a leaf (if_tun_debug)

[Antoine Jacoutot]

Hi :)

I just upgraded from 5.1-CURRENT to 5.2-RELEASE today, but I still have the 
same problem I was having before.
When booting the box, I get the following error:

module_register: module if_tun already exists!
Module if_tun failed to register: 17
can't re-use a leaf (if_tun_debug)!

It looks like FreeBSD wants to load the if_tun module but I already have 
"device tun" in my kernel config file.
I deleted /etc/rc.d/* then did a "mergemaster -i" but it did not change 
anything.

Do you have any idea how I could fix this ?
Thanks in advance.
Regards,

Antoine