dnf update vs Software Udpates

Fri Aug 14 10:59:48 UTC 2015

On Fri, 2015-08-14 at 12:47 +0200, Michael Schwendt wrote:
> Behaviour of running with --refresh and after "clean metadata"
> (or the infamous "clean all") differs, because whereas the latter 
> forces dnf to start from scratch and download all metadata, the 
> former only expires the metadata. It remains available in the cache 
> for a check whether it may still be current.

If the metadata is expired, why is it being checked for currency?

poc