The problem is that the new version of nut depends on a new version of freeipmi (
https://bodhi.fedoraproject.org/updates/FEDORA-2017-5f8e18be61 ) which is still in
updates-testing. Installing it manually allows nut to update. The freeipmi update has been
eligible to be pushed to stable for weeks now. There is probably a similar issue in F25.