resolver(5) aka resolv.conf(5) is extremely badly out of date. The resolver
code has been updated from Bind a number of times, but this particular piece
of documentation has not been synced in a while.
src/contrib/bind/doc/man/resolver.5 (this is missing some stuff too, though)
In particular, the most important missing options are:
Sync up the descriptions, and add insecure1/insecure2/edns0.
(I would have made the patch, but I don't know what's the copyright policy
because the boilerplates with local and bind's resolver.5 don't match...)
How-To-Repeat: man 3 resolver
man 5 resolver
nroff -mandoc /usr/src/contrib/bind/doc/man/resolver.5 | less
This is a doc issue
Hajimu, can you look into fixing this?