Allow to have DnsNameResolver.resolveAll(...) notify as soon as the pr… #9136
…eferred records were resolved
075cf8c introduced a change to allow resolve(...) to notify as soon as the preferred record was resolved. This works great but we should also allow the user to configure that we want to do the same for resolveAll(...), which means we should be able to notify as soon as all records for a preferred record were resolved.
Be able to speed up resolving.