Nfs – How to start Cygwin’s NFS server in read-write mode

Installed Cygwin's NFS server. It works. But I can't make it allow writing to the filesystem. Why does it fail?

Server:

$ cat /etc/exports
#/ 10.99.98.2(rw,no_root_squash)
/cygdrive/c/foranevia *(rw,no_squash_root,anon_uid=0,anon_gid=0,no_subtree_check)

Client:

root@vi-notebook:/mnt# mount wpc:/cygdrive/c/foranevia nfs
root@vi-notebook:/mnt# mkdir nfs/qqq
mkdir: cannot create directory `nfs/qqq': Read-only file system

Update: Fixed configuration line to /cygdrive/c/foranevia *(rw,no_root_squash) and now it seems to work, although not all hosts can mount until I explicitly list them in /etc/exports.