IPV6 can't ping

[CthulhuSamurai]

Working on my CCNA and studying IPV6.  In the attached file is the network I am working on.  I can not ping across router c, so A and B can't ping D or E, and vice versa.  This comes from Lammle's CCNA book page 574.  Any help would be greatly appreciated,

[Georg Pauwen · Accepted solution]

Hello,

I added a default route to all 4 routers, as well as static IPv6 addresses to the interfaces, which establishes full connectivity.

What are the requirements according to the book ?

Attached is the revised file (I saved it in version 7.3).

[CthulhuSamurai]

The lab in the book just said set it up the way it was and it should work, that's all.  Thank you for your help.