I was going to put a ticket in for this but realized it was not officially supported, according to the documentation. I have 2 data domain virtual appliances deployed. One that I deployed over the summer that was initially 6.0.x and was upgrading to 6.1 and now i've licensed a second appliance with EMC and was deployed with DDOS 126.96.36.199 (same as my first appliance). I am getting authentication errors when I try to add to Veeam the logs also point to auth issues. I've tried adding my original appliance to another veeam server and I get the same thing. I've read articles online where other Veeam users had deployed 188.8.131.52 without any issues. Is there a any tricks I could use to get it to work? I understand it's unsupported I am only in my testing phase anyway. Just looking for other user's experiences with this.