According to https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml, the documentation prefix should never be assigned to any real interface. So please consider tto use 2001:2::/48 (benchmarking) instead. A real "Test-Prefix" is not assigned, yet.
Ah, no. I thought the submitter could do that/had a commit bit.
You can do it if you want, @0mp. Thanks!
LGTM for the man page part.