A few months back, I put together a big fat guide on how to configure DNS and DHCP on your LAN the old-school way, with bind and dhcpd working together to seamlessly hand out addresses to hosts on ...
A larger question, though, is how useful DHCP6 really is when—at least as I understand things—the overwhelming majority of folks using IPv6 will turn on prefix delegation + SLAAC and call it done.