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Introduction

Jool is an Open Source SIIT and NAT64 for Linux.

• Click here to start getting acquainted with the software.
• Click here to download Jool.

Status

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.

Survey

Latest News

2020-10-07

Jool 4.1.4 has been released.

Bugfixes:

1. #341: Deprecate “blacklist4,” add replacement “denylist4.”
2. #342: Add /32 to the generic denylist again. (And remove secondary addresses, since nobody has actually requested them.)
3. #343: Clarify some documentation. (WIP)

I also largely rewrote the intro to xlat, to reflect the changes from the MAP-T branch. Feedback would be appreciated.

Remember that lowest-ipv6-mtu’s paranoid default might induce unnecessary fragmentation. If you want Jool 4.1 to reach 4.0’s performance, please review the MTU documentation.