What is causing all these errors?

,

They go on and on and eventually fail the update. This is the 1st time I see anything like this, for over 15 years. Been trying to update for more than a month and keep getting the same end result.

$ sudo dnf update

skip...

[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [      <=>         ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
>>> Status code: 404 for http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                               
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
>>> Status code: 404 for http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                               
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
>>> Status code: 404 for http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                               
>>> Status code: 404 for https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                             
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
>>> Status code: 404 for http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                               
>>> Status code: 404 for https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                             
>>> Status code: 404 for http://fedora.mirror.iweb.com/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 198.50.127.68) - http://fedora.mirror.iweb.com/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                    
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                               100% [==================] |   1.7 KiB/s | 153.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       
>>> Status code: 404 for http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - http://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                               
>>> Status code: 404 for https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.89.84.55) - https://mirror.dst.ca/fedora-linux/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                             
>>> Status code: 404 for http://fedora.mirror.iweb.com/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 198.50.127.68) - http://fedora.mirror.iweb.com/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                    
>>> Status code: 404 for https://lesnet.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.239) - https://lesnet.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                             
[  1/430] kernel-devel-0:6.19.10-200.fc43.x86_64                                                                                                                                                                                                                                 0% [       <=>        ] |   1.7 KiB/s |   0.0   B |  00m00s
>>> Status code: 404 for https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - https://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                              
>>> Status code: 404 for http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 23.128.92.156) - http://yxeix.mm.fcix.net/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                
>>> Status code: 404 for https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - https://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                   
>>> Status code: 404 for http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 136.159.208.97) - http://mirror.cpsc.ucalgary.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                     
>>> Status code: 404 for https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - https://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                     
>>> Status code: 404 for http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm (IP: 208.81.1.244) - http://muug.ca/mirror/fedora/linux/updates/43/Everything/x86_64/Packages/k/kernel-devel-6.19.10-200.fc43.x86_64.rpm                                                       

Try

sudo dnf5 clean all

and then run the update again

Subject.

A HTTP status code 404 indicates that a resource is missing. This could be caused by either outdated information on your client (meaning it is requesting outdated files that no longer exist on the server), or it could be a server issue where a mirror does not have the latest packages (meaning your client is requesting the latest files and the mirror is outdated).

Since my system is currently on kernel 6.19.12 and yours is requesting 6.19.10, I would guess it’s the former.

In any case, this should normally be resolved by adding --refresh to update the package information:

$ sudo dnf upgrade --refresh

Why are the update files missing from so many mirrors?

Because storage costs money and old files are deleted after a while.

I tested some of the urls and they have the 6.19.12 versions of the kernel.

For a current kernel in f43 that seems unlikely.

But 6.19.10 isn’t current, 6.19.12 is. That’s why I wrote that the system in the OP probably has outdated package information.

On my system, 6.19.10 was installed on March 25th, 6.19.11 on April 2nd, and 6.19.12 on April 12th. And I checked a couple of mirrors, they only had packages for kernel 6.19.12.

So the old way of updating with dnf update is prone to errors now, and dnf update -refresh is the only one that will work going forward?

Normally, dnf should automatically update its cached metadata when it is outdated (also see the documentation on caching). Check the metadata_expire lines in the /etc/yum.repos.d/*.repo files.

Apparently, on your system that didn’t happen, so dnf tries to download packages that were updates some time in the past but have since been replaced by even newer versions. If I run a manual update, I do it deliberately and want to install the latest versions at that point in time, so I usually also --refresh the metadata.

Edit: BTW, another way to force an update is to invalidate the cached information, that’s probably why Matt suggested to

That wasn’t an issue some releases back though, like 10-20. Is this net new in dnf5?

Since dnf5 is a complete reimplementation, it stands to reason that any issues you might experience were introduced with that version.

dnf has always worked this way, and yum before it.
dnf caches the meta data and only when it’s old does it get refreshed.

In man dnf.conf it says that the default is to update metadata after its 48 hours old.
Maybe your system date and time is not correct?
Or may have overriden the setting in your /etc/dnf/dnf.conf for some reason?
Do you have a metadata_expire= setting?

Some of us that know the meta data maybe a bit old, will use dnf update --refresh

I do this in my weekly upgrade script for example.

It is safer to use `dnf5 …` so when viewing journal entries it is clear which version was use, and you need to use two - minus/dash characters (the usual convention for multi-character options). I have Fedora on 3 systems. One sometimes misses updates that got installed on the others. It uses a different default mirror, but —refresh usually gets it back in agreement.

Not true. I never had this issue with them, since the early releases.

You may want to check,
systemctl status dnf5-makecache.timer

You can get the settings with :
sudo dnf --dump-main-config

Dnf4 and dnf5 are different. Dnf5 was completely written new and has only been in use on fedora for the last few releases.

Dnf (all versions) have a timeout on when the cache is considered old and needs refreshed, and that default timeout may be the cause of your issue here.
Using the --refresh option overrides that timeout and forces an immediate update of the cached metadata.

My experience does not match yours. Been using Fedora since Fedora Core 1.

There is something that prevents the meta data to be updated, and the reason may have scrolled off the top of the screen. To see these message, it would be useful to run sudo dnf check-update kernel which would normally show how the meta data is updated including error messages if there are any.