ESX Installation on OVH Cloud with /32 Subnet Issue

[skoenigpi]

Hello, Community,

We're trying to install ESX on OVH that restricts IP addresses to specific MAC addresses and assigns a public IP (e.g., 46.101.111.10) via DHCP with a subnet mask of 255.255.255.255 and an internal gateway (e.g., 100.64.0.1). I'm encountering a NullPointer in the DHCP log, and manual IP assignment is not possible due to the /32 subnet.

This issue affects all ESX versions up to 8u3. 

Has anyone found a workaround for this issue?

Thanks in advance for any insights!

Sebastian

[stephane seynhaeve]

Hello Sebastian,

I have exactly the same Issue.

No answer from Ovh why they send a 91.134.4.147/255.255.255.255 ip adress with an IP GW at 100.64.0.1.

Same OS 8u3. I had test with 7u3, same problem.

Did you had any news about it ?

Stephane

[skoenigpi]

Hello Stephane,

This has become a common practice among major providers using host route gateways. Normally, all modern operating systems support this setup-except for ESX, unfortunately. :-(

However, you can use IPv6 with a static IP address. That works. Just disable IPv4 entirely for the Management Interface and use a second Kernel in vRack with IPV4. But keep in mind that OVH's firewall does not support IPv6, so you'll need to configure the ESX firewall accordingly.

Private Link Aggregation doesn't work well because ESX has no LACP Support for non Distributed Switch Connections.
So you are currently stuck with this Setup.
They will bring vmware Cloud Director soon. This will be the recommend Hosting Setup.

Best regards,
Sebastian