Created attachment 128316 [details]
offline not really offline
Using PackageKit-1.1.4-1.fc25.x86_64 pk-offline-update tries to go online when doing an offline update:
Dec 03 13:22:03 surface pk-offline-update: failed to update system: Curl error (6): Couldn't resolve host name for https://copr-be.cloud.fedoraproject.org/results/bentiss/mtdiag-qt/pubkey.gpg [Could not resolve host: copr-be.cloud.fedoraproject.org]
$ cat /etc/yum.repos.d/_copr_bentiss-mtdiag-qt.repo
name=Copr repo for mtdiag-qt owned by bentiss
It happened to me too with a COPR enabled. As soon as I disabled the COPR, the issue was gone.
Thanks, should be fixed with https://github.com/rpm-software-management/libdnf/commit/ccd2e28c0a9557808b9b9cd3011642218149390b