http://ftp.yellowdoglinux.com/pub/yellowdog/yum/6.1/base/
http://ftp.freshrpms.net/pub/yellowdog/yum/6.1/base/
http://ftp.aarnet.edu.au/pub/yellowdog/yum/6.1/base/
http://ftp4.sane-project.org/opsys/linux/yellowdog/yum/6.1/base/
http://ftp.informatik.rwth-aachen.de/ftp/pub/Linux/yellowdog/yum/6.1/base/