Twin directories of patches_to_2.3:

[DIR]  ftp://ftp.zib.de/pub/visual/Mesa/mirror/old-versions/patches_to_2.3/
[DIR]  ftp://ftp.zib.de/pub/visual/Mesa/mirror/patches_to_2.3/
[DIR]  ftp://ftp.cesnet.cz/Libs/Mesa/old-versions/patches_to_2.3/
[DIR]  ftp://ftp.cesnet.cz/.vol/backup/Libs/Mesa/old-versions/patches_to_2.3/