I have: rpm -q nss-pem nss-pem-1.0.3-3.fc26.x86_64 nss-pem-1.0.3-3.fc26.i686 When I run dnf dist-upgrade I get: Problém 6: nss-pem-1.0.3-3.fc26.i686 has inferior architecture - nss-pem-1.0.3-3.fc26.x86_64 does not belong to a distupgrade repository - problem with installed package nss-pem-1.0.3-3.fc26.i686 This is because # dnf repoquery --releasever 27 nss-pem nss-pem-0:1.0.3-5.fc27.x86_64 So i686 package is missing in x86_64 repository.
*** This bug has been marked as a duplicate of bug 1500655 ***