Iscsi target software incorrectly reports all targets as lun:0
the iscsi target software available on freenas reports all targets as lun=0 instead of a guid value. this effectively means that you cannot use freenas with multipathing capable initiators due to the fact that if you connect more than 1 iscsi target to the initiator it believes it to be a disabled multi-path.
to reproduce the bug install any multipath capable initiator. i prefer vmware as it is very standards compliant. build 2 freenas storage boxes. connect an iscsi target from the first box. then create a target on the 2nd freenas box and attempt to attach it. the result will be that the 2nd connection will have a "dead" status because the luns are identical even if you make them different sizes.