KVM not bridgeing to the ib0.

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I have two servers hosting kvms in an HPC cluster. The infiniband network is the link to the Panasas storage array. I have Mellanox routers and ConnectX 3 infiniband cards. I recently did a security update to the installed RHEL6.5 OS. The update used Sept 2017 repo patchset. The kernel update necessitated the reinstall of Mellanox drivers to match the kernel. I updated to MLNX_OFED-4.3 from MLNX_OFED-3.4. Since the update the kvms cannot connect to the storage array. They cannot ping the router address or the array address.
I downgraded the Mellanox drive back to MLNX_OFED-3.4, with no change.
I've noticed on the working system the virtual nic has these configs in VirtualManager:
Host device is vnet1 (Bridge br1)
Device model: Hypervisor Default

On the broken system VirtualManger shows:
Source device: Specify shared device name
Bridge name: br1
Device model: virtio
I'm not sure of the best way to make these configurations the same. There is no option similar to vnet1 (Bridge br1) on the broken system. How can I create this bridge/vnet option?

DG

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