Part of that is /31 being an extension to IP that isn't universally accepted/implemented.
I tend to run /30 as the smallest because of that (no sudden surprises if a piece of gear doesn't support the extension)
I tend to run /30 as the smallest because of that (no sudden surprises if a piece of gear doesn't support the extension)
I think last time I used it there were a few bugs around redistribution. I tend to use private IPs, certainly for p2ps, so a /30 is fine