RPMForge Repo not working

RPMForge Repo not working

I installed the RpmForge repo on Redhat 5.9 Server and imported the Dag
Key. But I try to fetch the packages from the internet it gives me this
error.
Could not retrieve mirrorlist
http://mirrorlist.repoforge.org/el5/mirrors-rpmforge error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.repoforge.org'"
http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/repodata/repomd.xml: [Errno
14] PYCURL ERROR 6 - "Couldn't resolve host 'apt.sw.be'"
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository:
rpmforge. Please verify its path and try again
Yum repolist
[root@kvm ~]# yum repolist
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription Management. You can
use subscription-manager to register.
Could not retrieve mirrorlist
http://mirrorlist.repoforge.org/el5/mirrors-rpmforge error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.repoforge.org'"
http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/repodata/repomd.xml: [Errno
14] PYCURL ERROR 6 - "Couldn't resolve host 'apt.sw.be'"
Trying other mirror.
repo id repo name

status
rhel-local RHEL Local
repo
3,718
rpmforge RHEL 6Server -
RPMforge.net - dag 0
repolist: 3,718
When i ping using www.google.com it gives this message
ping: unknown host www.google.com
but when i ping using 8.8.8.8 it gives pings results
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=45 time=124 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=45 time=114 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=45 time=111 ms
Any Ideas