CenturyLink VDSL2 Support For RFC 4638 or IPoE?

Hey everyone,

Don't suppose if anyone on this list knows if RFC 4638 (baby jumbos, aka MTU of 1508) or IPoE is supported on CenturyLink VDSL2 connections?

I know IPoE is supported on connections with their TV service option. Would be nice to either get PPPoE out of the picture or have a proper 1500 MTU.