IPv6 Traffic class field or DS field ??

[Nikki Cranley]

Hi sorry if this old hat for you! and a really stupid question but could anyone help?   I have been reading the RFC's relating to IPv6 for some insight to the replacement for the ipv4 TOS field. In rfc 2460, there is talk about a traffic class field and then in rfc 2474 it talks about a differentiated services field. Could anyone tell me which has been "accepted" and if so where I could find out more details about this particular field and the various priorities etc.  as I am interested in trying to use this field for some qos mechanisms.   Thanking you, rgds, Nik