Yes. Intel network adapters and network connections are tested with and support IPv6.

Intel tests our network adapters with IPv6 traffic using current versions of Microsoft Windows*, Linux*, and FreeBSD*.

This applies to:

Intel® 10 Gigabit AF DA Dual Port Server Adapter Intel® 10 Gigabit AT Server Adapter Intel® 10 Gigabit AT2 Server Adapter Intel® 10 Gigabit CX4 Dual Port Server Adapter Intel® 10 Gigabit XF LR Server Adapter Intel® 10 Gigabit XF SR Dual Port Server Adapter Intel® 10 Gigabit XF SR Server Adapter Intel® Ethernet Converged Network Adapter X520 Series Intel® Ethernet Converged Network Adapter X540-T1 Intel® Ethernet Converged Network Adapter X540-T2 Intel® Ethernet Server Adapter I210-T1 Intel® Ethernet Server Adapter I340-F4 Intel® Ethernet Server Adapter I340-T4 Intel® Ethernet Server Adapter I350-F2 Intel® Ethernet Server Adapter I350-F4 Intel® Ethernet Server Adapter I350-T2 Intel® Ethernet Server Adapter I350-T4 Intel® Ethernet Server Adapter X520 Series Intel® Ethernet Server Adapter X520-DA2 Intel® Ethernet Server Adapter X520-LR1 Intel® Ethernet Server Adapter X520-SR1 Intel® Ethernet Server Adapter X520-SR2 Intel® Ethernet Server Adapter X520-T2 Intel® Gigabit CT Desktop Adapter Intel® Gigabit EF Dual Port Server Adapter Intel® Gigabit ET Dual Port Server Adapter Intel® Gigabit ET Quad Port Server Adapter Intel® Gigabit ET2 Quad Port Server Adapter Intel® PRO/100 M Desktop Adapter Intel® PRO/100 S Desktop Adapter Intel® PRO/100 S Dual Port Server Adapter Intel® PRO/100 S Management Adapter Intel® PRO/100 S Server Adapter Intel® PRO/100 Smart Adapter Intel® PRO/100+ Adapter Intel® PRO/100+ Dual Port Server Adapter Intel® PRO/100+ Management Adapter Intel® PRO/100+ Server Adapter Intel® PRO/1000 GT Desktop Adapter Intel® PRO/1000 GT Quad Port Server Adapter Intel® PRO/1000 MF Dual Port Server Adapter Intel® PRO/1000 MF Server Adapter Intel® PRO/1000 MF Server Adapter (LX) Intel® PRO/1000 MT Desktop Adapter Intel® PRO/1000 MT Dual Port Server Adapter Intel® PRO/1000 MT Quad Port Server Adapter Intel® PRO/1000 MT Server Adapter Intel® PRO/1000 PF Dual Port Server Adapter Intel® PRO/1000 PF Quad Port Server Adapter Intel® PRO/1000 PF Server Adapter Intel® PRO/1000 PM Network Connection Intel® PRO/1000 PT Desktop Adapter Intel® PRO/1000 PT Dual Port Server Adapter Intel® PRO/1000 PT Quad Port Low Profile Server Adapter Intel® PRO/1000 PT Quad Port Server Adapter Intel® PRO/1000 PT Server Adapter Intel® PRO/1000 XF Server Adapter Intel® PRO/1000 XT Low Profile Server Adapter Intel® PRO/1000 XT Server Adapter Intel® PRO/100B Adapter Intel® PRO/10GbE CX4 Server Adapter Intel® PRO/10GbE LR Server Adapter Intel® PRO/10GbE SR Server Adapter NetEffect™ Ethernet Server Cluster Adapters