I just ran: `env ZYPP_SINGLE_RPMTRANS=1 ZYPP_MEDIANETWORK=1 zypper dup --download-only`
And trying to run a regular dup (without --download-only) did not display the packages as being already cached. I had to re-download them all again when running `env ZYPP_SINGLE_RPMTRANS=1 ZYPP_MEDIANETWORK=1 zypper dup`
Other than that, the upgrade went flawlessly, and these features are really useful. Thanks a lot for the incredible work!
Thanks for the report, there was a issue with caching in the new code. This should be fixed with the upcoming libzypp release, for reference: https://bugzilla.suse.com/show_bug.cgi?id=1190356