On Thu, Jan 2, 2014 at 3:14 PM, Reindl Harald wrote:

the bahvior is obviously not (or *not yet*) identical and the viewpoint
what are not often used bordercases may vary and depend on the environment
as i pointed out "yum -y remove kernel" is a regular task here after machines
are running long enough with the last recent one as cleanup

I agree with that and the kernel removal behavior isn't the only difference. I mean, how often would one run dnf remove glibc on purpose and the significant amount of accidental runs of yum that caused serious problems resulted in yum developers adding some protection against removing key packages. dnf changing this expected behavior is problem and clearly this is a design decision which I think needs to revisited.

http://akozumpl.github.io/dnf/cli_vs_yum.html#protected-packages-is-ignored

Rahul