Sharing a dataset with multiple jails


I recently installed FreeBSD on my new server. Right now I have one jail running with transmission on it, seeding different Ubuntu versions. Couldn't get the port working, but the package worked excellent.

So now I want to create two other jails. One with a NFS/Samba share and one which can stream to a Logitech squeezebox. The problem is they need to share the same dataset. While the handbook has documentation about NFS, but apparently it's not possible to mount a NFS share in a jail?

tl;dr: How can jails share the same dataset for sharing files between them?

ps. I use sysutils/iocage to manage my jails
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Use nullfs(5) to mount it multiple times on other locations. Can also be added to each jail's /etc/fstab.<jailname>.