[c-nsp] reacheability issue in MEL link

[Engelhard Labiro]

> i told the carrier i want to have the packets transferred with dot1q
> encapsulation, and they replied that they are providing a transparent
> environment, reagardless the two ends are access or trunk

Does your carrier support 802.1QinQ or something alike that is able to
transport your dot1q tag?
http://www.ippacket.org/blog/archives/2004/08/ieee_8021q-in-q.html
just FYI, we have a CE router (7206VXR) with trunking port to provider's PE.
This working without problem here, YMMV.