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"iSCSI Multipathing" doesn't work when using two or more local interfaces in the same subnet

Solution Verified - Updated 2016-02-05T21:18:42+00:00 -

Issue

I have an iSCSI Storage Domain with one target IP. Then I configured the "iSCSI Multipathing" with eth1 and eth2.
However, from the moment I shutdown my eth1 on the switch to simulate a path failure, the Cluster goes down because it can't connect to the storage anymore.

Environment

Red Hat Enterprise Virtualization 3.4 and 3.5.0.
Hypervisor with 3 interfaces, eth0(rhevm), eth1(MP1), eth2(MP2).
MP1 and MP2 are two non-required Logical Networks used to reach iSCSI Storage.
eth1 and eth2 with IPs in same subnet.
One iSCSI target IP.

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