Jool is an Open Source SIIT and NAT64 for Linux.
As far as we know, Jool is a compliant SIIT and Stateful NAT64.
Jool 4.1.1 has been released.
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.