Don't dedup DNS from dyn sources if override is disabled. Fixes #9963
(cherry picked from commit f829d7e2967d170f09756937e9076e87d5f9e2d7)
Don't dedup DNS from dyn sources if override is disabled. Fixes #9963
(cherry picked from commit f829d7e2967d170f09756937e9076e87d5f9e2d7)