[root@g3m202 ~]# yum -d 6 update
Yum Version: 2.4.0
COMMAND: yum -d 6
Installroot: /
Setting up Update Process
Setting up repositories
Baseurl(s) for repo: ['http://mirror.centos.org/centos/4/updates/i386/']
update                    100% |=========================|  951 B    00:00
Baseurl(s) for repo: ['http://mirror.centos.org/centos/4/os/i386/']
base                      100% |=========================| 1.1 kB    00:00
Baseurl(s) for repo: ['http://mirror.centos.org/centos/4/addons/i386/']
addons                    100% |=========================|  951 B    00:00
Baseurl(s) for repo: ['http://mirror.centos.org/centos/4/extras/i386/']
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
Setting up Package Sacks
primary.xml.gz            100% |=========================|  15 kB    00:00
primary sqlite cache needs updating, reading in metadata
update    : ################################################## 43/43
Added 43 new packages, deleted 0 old in 0.98 seconds
Error: failure: repodata/primary.xml.gz from base: [Errno 256] No more mirrors to try.
[root@g3m202 ~]#