User`s guide

Chapter XII. Offload IPv6 driver
Chelsio T5/T4 Unified Wire For Linux Page 183
2. Software/Driver Loading
IPv6 must be enabled in your system (enabled by default) to use the Offload IPv6 feature.Also,
Unified Wire package must be installed with IPv6 support (see Software/Driver Installation).
After installing Unified Wire package and rebooting the host, load the NIC (cxgb4) and TOE
(t4_tom) drivers. The drivers must be loaded by the root user. Any attempt to load the drivers as
a regular user will fail.
[root@host]# modprobe cxgb4
[root@host]# modprobe t4_tom
All the IPv6 traffic will be offloaded now.