Description of problem:

With the F17 kernel, I was able to mount NFS (v4) mounts
just fine.  However while testing another bug I installed
the F18 kernel on this machine, and now NFS mounts no longer
work.

$ sudo mount -t nfs4 192.168.0.249:/mnt/media /mnt/media
mount.nfs4: No such device
$ sudo mount -t nfs 192.168.0.249:/mnt/media /mnt/media
mount.nfs: Connection timed out

Nothing significant in kernel messages ...

[18217.147943] FS-Cache: Loaded
[18217.149885] Key type dns_resolver registered
[18217.160996] FS-Cache: Netfs 'nfs' registered for caching

Also, I have another F18 machine which cannot mount the same
NFS partitions.

AFAIK nothing has changed on the server side (which is RHEL 6.3),
and other F16/F17 machines are able to mount the same partitions.

Version-Release number of selected component (if applicable):

3.6.0-0.rc1.git4.1.fc18.x86_64

and on the other machine, 3.6.0-0.rc1.git3.2.bz844485.4.fc19.x86_64

How reproducible:

100%

Steps to Reproduce:
1. Try mounting nfsv4 volume ...