This particular problem would not crop up on Google Compute Engine. See this cryptic snippet from /sbin/ifconfig on a production GCE VM:

eth0 Link encap:Ethernet HWaddr 42:01:0a:f0:40:dd inet addr:10.240.64.221 Bcast:10.240.64.221 Mask:255.255.255.255

This isn't an intentional feature, it's just a property of how our Andromeda SDN[0] is wired up. In particular, we lift the business end of figuring out where the other hosts on your LAN are up into the SDN rather than relying on the guest to cache ARP entries (hence the /32 netmask).

[0]: http://googlecloudplatform.blogspot.com/2014/04/enter-androm...