This is really cool to see. IPv6 is the internet's "peak oil" problem, or a "long emergency" - most seem to think of the transition as a "maybe someday" nice to have, without realizing how few blocks remain in the IPv4 address space.

It's refreshing to see a major ISP take the initiative to prepare their networks, but also release software to help others route between IPv4 and IPv6 networks. Speaking of which, you can download it here: https://www.isc.org/software/aftr

That said...I'd prefer that most of the source weren't a 13,217-line file with rare, cryptic comments called "aftr.c" ;-).

PDF'd manpages: http://u.phoreo.com/rh.pdf