Yep, apparently so. I've just came across this one whilst looking for new Linux distro's to download, and thought I'd mention it as I've not heard of it before.
It's name is Vyatta, and though it took a while to find it's download (the .com only provides the download via registration, you've got to go to the .org site to get the non-registration version), it's claimed;
For 154MB, it looks pretty impressive. Though I'll obviously have to see how it plays once I've got it downloaded and running. In the meantime, you can get it yourself from;
Step by Step Setup Guide