Created attachment 1941549 [details] arpwatch-c99.patch There's a small C99 compatibility issue in the arpwatch package because it calls a glibc function that hasn't been declared in the installed headers for many, many years. Filing this here for tracking purposes because upstream, while still active, does not have a public bug tracker.
Thank you for the report. I just passed along the details by email to upstream (CC’ing you). I am not confident I will receive a reply. In any case, I will apply the patch downstream.
FEDORA-2023-17ab08ccf3 has been submitted as an update to Fedora 38. https://bodhi.fedoraproject.org/updates/FEDORA-2023-17ab08ccf3
FEDORA-2023-17ab08ccf3 has been pushed to the Fedora 38 stable repository. If problem still persists, please make note of it in this bug report.