Merge pull request #15439 from nokia/master

dnsdist: Support DSCP marking towards downstream server

diff --cc pdns/dnsdistdist/dnsdist-rust-lib/rust/src/lib.rs
Simple merge

diff --cc pdns/dnsdistdist/dnsdist-settings-definitions.yml
Simple merge

diff --cc pdns/dnsdistdist/dnsdist.hh
Simple merge

diff --cc pdns/dnsdistdist/docs/reference/yaml-settings.rst
Simple merge

diff --cc pdns/misc.hh
Simple merge