Changelog for zeromq-4.3.4-2.el9.x86_64.rpm :

* Tue Mar 07 2023 Ben Woodard - 4.3.4-2- disable building with libunwind to fix C++ exceptions when a C applicaion loads a module written in C++ #2175966
* Thu Mar 03 2022 Fedora Release Engineering - 4.3.4-1- Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild