Jool is an Open Source SIIT and NAT64 for Linux.


As far as we know, Jool is a compliant SIIT and Stateful NAT64.

Its latest version is 4.1.4 and its most mature version is 4.0.9.

The MAP-T implementation is almost done. See the news.


Latest News


Hello, everyone.

I’m running out of known issues. The MAP-T code has matured a fair bit, and so I’d like to let loose an alpha version of Jool 4.2.

Early adopters: Please consume and criticize the new documentation pages, and maybe try out the software:

I’ll aim to post a release candidate tar on December 16, and then wait a month and a half for issues.