Question on link definition

Hi,

I have a question about the definition of "link" in

draft-ietf-seamoby-mobility-terminology-04.txt

It is said:

"A communication facility or physical medium that can sustain data
communications between multiple network nodes, such as an
Ethernet (simple or bridged). A link is the layer immediately
below IP."

As I undestand, the definition of link is not directly related to an 
IPv6 link.
For example, consider the following example:

One ethernet link where a router advertises a single IPv6 prefix, and an 
802.11b access point connected to this ethernet link as illustrated here:

    
         AR
   ____ |__________________
                |                         |
             AP                     Fixed node
                         MN2
 MN1          

In this situation, is it right to say that :
    - there are 2 links
and
    - there is one IPv6 link
?

Thanks

Regards,
Nicolas