# Notes for BIND 9.15.4

## New Features

- Added a new command line option to `dig`: `+[no]unexpected`. By default, `dig` won't accept a reply from a source other than the one to which it sent the query. Add the `+unexpected` argument to enable it to process replies from unexpected sources.

- `dig`, `mdig` and `delv` can all now take a `+yaml` option to print output in a a detailed YAML format. [RT #1145]

## Bug Fixes

- When a `response-policy` zone expires, ensure that its policies are removed from the RPZ summary database. [GL #1146]