The issue of Networking changes during failover/failback operation from a replicated Linux machine is expected.
Newer Linux versions now associates MAC addresses with network configuration as noted in the KB below and so ETH0 will become ETH1 which will need to be configured.
This forum has a script that might make the fix easier for VMs where only a single NIC is involved - use it at your own risk. The script basically renames eth1 to eth0 which should have the desired result.
In summary, this is non vRanger issue. You might want to clarify with vmware or linux support on how they will manage this issue in the future. RedHat has a documented workaround though. Here is the link for you: