r196714 breaks NFSROOT in -CURRENT. When nfsclient tries to initialize interface calling ifioctl at nfsclient/nfs_vfsops.c:466 it fails with EEXIST (because route is already present I guess). I fixed it in my tree by checking for error code in mount_nfsroot, but may be it's ifioctl(SIOCAIFADDR) that should handle this case. -- gonzo