hi johnny, >> anyone any hints how to debug this or some clues what could be going >> wrong here. > > Do you have an exclude in /etc/yum.conf for ibutils-libs? how embarassing. there was indeed an exclude on ibutils-libs. (this must be some leftover from using mlnx ofed. we are switching from c73+mlnx ofed 3.4 to c74 stock ib (there's no mlnxofed3.4 for c74, and our old testbed has connectx2, so we can't use mlnxofed 4.1) ) never start debugging things on a friday evening i guess ;) thanks and sorry for the noise. stijn > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >