We’ve created a private Local Area Network (LAN), in each datacenter, upon which Linodes can join, without having to worry about the transfer counting against their monthly network quota. This feature allows for some interesting possibilities. For instance, creating sets of front-end webserver Linodes and back-end database server Linodes which communicate over this private network. Database replication, backups and rsync also come to mind. Oh, and IP Failover works for both public and private IPs.
To get in on the fun, log-in to the members’ site and head to this page. Click the button to have a private IP address assigned to your Linode. Reboot your Linode and bring up the new IP on eth1 — an example command for doing this is provided on the page. You will need to complete these steps for each Linode you want to be able to communicate over the back-end network.
This only works for Linodes within the same datacenter. The Linodes do not have to be under one account/linked.
So, how much is this feature? You guessed it: FREE!