backbone links diagram

[JOIN Project Team <join@uni-muenster.de> (JOIN Project Team)]

Hi Bob,

please can you annotate that IDRPv6 is used over the JOIN<>UNI-C tunnel
in your backbone links diagram. 

What do you think about a new kind of line type (or other color) for IDRP
links (or other routing protocols) between backbone sites?

Thanks, all the best
- Guido