Comment 25 for bug 1302080

Hmm. Thinking a bit more about it, I think you'll probably need a multi-node setup. As I observed in comment #19, on the network nodes the disable_ipv6 sysctl *does* get set, it's only on the compute nodes where it does not. If you have everything running on a single node, I'm guessing that whatever it is that is responsible for setting disable_ipv6 correctly on my network nodes is saving the day for you on your hybrid network+compute node.