Improvements since 4.1.3:
- #341: Deprecate "blacklist4," add replacement "denylist4."
- #342: Add /32 to the generic denylist again. (And remove secondary addresses, since nobody has actually requested them.)
- #343: Clarify some documentation. (WIP)
I also largely rewrote the "intro-xlat" documentation page, to reflect the changes from the MAP-T branch.