On Nov 20, 2011, at 12:39 AM, "Alex Bligh" <alex at alex.org.uk> wrote: > However, > in one application we have, there is a virtual router port per VM, which > results in a /64 per machine if SLAAC etc. is used, which is hugely > wasteful. I'm pretty sure you're allowed to use a /127 for point to point links.