Bug in 2.6.10-4 kernel-source?

[Adam Porter <adam@alphapapa.net>]

After spending an hour or more configuring the kernel to leave out 
things I don't need, I left my old, slow laptop compiling overnight. 
When I checked it, I found this error:

security/built-in.o(.text+0x4e42): In function `avc_audit':
: undefined reference to `inet6_sk'

I remember enabling audit support and disabling IPv6 support.

Is this a bug in the dependencies-handling?  Seems like I should get a 
warning when I disable something that something else requires to compile.