So looks like I've come across a related issue. We had a power failure in Decemeber and a few days ago I was deploying vApps in vCloud Director and every virtual machine's network adapter would not connect. It showed as unplugged for every machine in the Windows OS and if you edit settings of the VM's in the Virtual Ceneter you will see the network adapter is disconnected. If you check the box, click ok it does not connect the adapter. There were no other vApps deployed and I had many switch ports avaliable. I stopped and started the vApps added to the cloud from Catelog multiple times, I build new vApps and imported fresh VM's but the issue persisted.
Being suspicious about the previous issue, I stopped all vApps, reprepared the host, started all the vApps and networking was fine. I changed absolutely nothing except repreparing the host. This issue seems very similar to the 1st bug I experienced.
How to reproduce this I have no clue, but it's strange network issues are resolved with repreparing the host.
I have logged a new SR for this issue. The case number is 13270982401.
Do you have any feedback on the orignial case and input on this issue _morpheus_?