As the controller stands today this "validation" is done once per config load, which means if the DNS query fails for any reason the endpoint will remain dead until both (1) a change happens to the ingress and (2) the DNS resolution works. If the user configured the name we should just pass it through, this way the lua dns can attempt to re-query it at its leisure.
Thomas Jackson
Manuel Alejandro de Brito Fontes
Elvin Efendi
Antoine Cotten