Comtrol RocketLinx ES8108 User Manual page 10

Introduction
For an IPv6 data packet, the Traffic Class Octet is used to differentiate the Class of Service. When this function is enabled, the
RocketLinx ES8108/ES8108F will automatically recognize the IP version and capture either the TOS field (IPv4) or Traffic
Class field (IPv6) and distribute the packet into the High or Low Queue.
IPv6 Frame Format
10 - RocketLinx ES8108/ES8108F User Guide: 2000514 Rev. B
IEEE 802.1Q Type of Service for IPv4 /IPv6 packet