Hello, Sorry, if this is a stupid question, but I am puzzled. I see https://urldefense.proofpoint.com/v2/url?u=http-3A__ftp.scientificlinux.org_linux_scientific_7.1_x86-5F64_updates_security_kernel-2Ddevel-2D3.10.0-2D693.17.1.el7.x86-5F64.rpm&d=DwIBAg&c=gRgGjJ3BkIsb5y6s49QqsA&r=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A&m=YVRgHcZv-5snhDPkJBSw6NJrLCmDhjPnY2_MQx5yLKA&s=5LUqeUfJmxs4Wf8PnrkO7Z5ZGm73U_j_dVwlKPgHcGM&e= and can download it (even install it with "yum install ..."). But it seems that "yum" by itself is blind on this eye: $ yum list available --showduplicates kernel-dev* --enablerepo sl-security Loaded plugins: auto-update-debuginfo, langpacks, product-id, subscription-manager Available Packages kernel-devel.x86_64 3.10.0-862.el7 sl kernel-devel.x86_64 3.10.0-862.2.3.el7 sl-security kernel-devel.x86_64 3.10.0-862.3.2.el7 sl-security kernel-devel.x86_64 3.10.0-862.3.3.el7 sl-security kernel-devel.x86_64 3.10.0-862.6.3.el7 sl-security Where are the packages of the rel 693 series (and all the others, which are seen in the repository)? Is it because they are silently excluded from the repodata? Or is there a maximum number of duplicates shown by yum? Cheers Dirk