Thanks for the responses. Sorry for the delay, July 4 is the Independence Day holiday here in the US, and I have been visiting with family the past couple of days.
It's not wildcarding on cups*, so that's not it. The repo database just appears to be massively hosed somehow:
[root@cobweb yum.repos.d]# dnf repoquery --whatprovides /usr/bin/foomatic-rip
Fedora 24 - x86_64 - Updates 51 kB/s | 8.5 MB 02:51
Last metadata expiration check: 0:01:37 ago on Tue Jul 5 16:45:38 2016.
[root@cobweb yum.repos.d]# ls cups*
ls: cannot access 'cups*': No such file or directory
[root@cobweb yum.repos.d]# dnf install cups-filters
Last metadata expiration check: 0:02:48 ago on Tue Jul 5 16:45:38 2016.
No package cups-filters available.
Error: Unable to find a match.
[root@cobweb yum.repos.d]#