Github user remibergsma commented on the pull request:
https://github.com/apache/cloudstack/pull/788#issuecomment-138887313
@koushik-das They have been different for a long time. I think when VPC was
invented, they reordered the nics so that the tiers came last (because you can
have N of them). Recently in a refactor, the order was also changed in VR. This
restores it. If we want the same order, we need to look at all the scripts
(cloud-early-config and friends) that use hardcoded nic names. I think this was
faster to do.
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