No network interfaces with 10.1-RC2 kernel and 9.2 userland

[Eric van Gyzen]

I used freebsd-update to update a 9.2-RELEASE-p10 i386 system to
10.1-RC2.  After installing the kernel and rebooting, still using the
9.2 userland, ifconfig showed no interfaces.  Is this expected?  Do I
need to bounce through 9.3 or 10.0 first?

Thanks,

Eric