A way around a device that does not support IPv6?

ianc1215 asked:

I have an issue and I am trying to come up with a solution around it.

The problem: I have 3 HP servers which have both iLO and iLO2 management controllers. Both of these do not support IPv6.

I am wanting to setup my test lab rack in full IPv6 mode. I want to disable IPv4 for my INTERNAL network. I am trying to figure out a way to bypass the iLO controllers yet still maintain something similar in fuctionality.

I had considered an IP KVM but all of them seem to require special software or cost a ton of money. There were some on eBay I was looking at like the HP AF600A but I can’t figure out if it supports IPv6 or what kind of software requirements it has.

Would an IP KVM be the best solution?

I was also thinking I could get another IPMI card for my server and just pop it into one of the spare PCIe slots on the machine. But there are not many slots since they are 1U servers.

Can anyone give their 2 cents on this matter.

The biggest hurdle to overcome is I do not have direct access to the hardware, its located about 200 miles from me. So….

Would I really just be better running dual stack protocol? and just use the iLO controllers since they can power on the servers in the event of a power outage?

My answer:

OK, so you have a number of old IPv4-only devices in your network. Ideally you’d like to be able to continue using them on your IPv6 network, though it seems that you think you can’t do so since, well, they’re IPv4-only. So now you’re looking for other solutions.

Of course, you could replace the offending devices, but the boss won’t give you that kind of money!

Enter NAT64.

NAT64 is a router protocol which permits IPv4-only hosts to be accessed from IPv6 hosts. The device implementing NAT64 translates the IPv6 addresses to IPv4 addresses and passes them on to the (hopefully very isolated) IPv4-only network, and translates the other way going back.

There are several Linux and BSD software implementations of NAT64. Microsoft Forefront Unified Access Gateway, as well as some recent Cisco and Juniper routers also implement it.

So, using NAT64, you can isolate and access your IPv4-only devices from IPv6-only hosts. Currently this is the preferred method of dealing with such old hardware.

View the full question and answer on Server Fault.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.