This was just a few minutes ago. Yes, I can ping them. I have no proxy server. Just a home cable internet setup with a simple router. Yum works on other computers.
[root@localhost user]# yum clean all
Loaded plugins: refresh-packagekit
Cleaning up Everything
[root@localhost user]# yum update
Loaded plugins: refresh-packagekit
adobe-linux-i386 | 951 B 00:00
adobe-linux-i386/primary | 12 kB 00:00
adobe-linux-i386 17/17
fedora | 4.2 kB 00:00
fedora/primary_db | 9.7 MB 01:26
Could not retrieve mirrorlist
http://mirrors.rpmfusion.org/mirrorl...a-12&arch=i386 error was
14: HTTP Error 503 :
http://mirrors.rpmfusion.org/mirrorl...a-12&arch=i386
Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmfusion-free. Please verify its path and try again
[root@localhost user]# ping -c 5 80.239.156.215
PING 80.239.156.215 (80.239.156.215) 56(84) bytes of data.
64 bytes from 80.239.156.215: icmp_seq=1 ttl=52 time=212 ms
64 bytes from 80.239.156.215: icmp_seq=2 ttl=52 time=212 ms
64 bytes from 80.239.156.215: icmp_seq=3 ttl=52 time=206 ms
64 bytes from 80.239.156.215: icmp_seq=4 ttl=52 time=217 ms
64 bytes from 80.239.156.215: icmp_seq=5 ttl=52 time=211 ms
--- 80.239.156.215 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4217ms
rtt min/avg/max/mdev = 206.492/212.294/217.648/3.581 ms
[root@localhost user]# ping -c 5 213.129.242.84
PING 213.129.242.84 (213.129.242.84) 56(84) bytes of data.
64 bytes from 213.129.242.84: icmp_seq=1 ttl=47 time=236 ms
64 bytes from 213.129.242.84: icmp_seq=2 ttl=47 time=227 ms
64 bytes from 213.129.242.84: icmp_seq=3 ttl=47 time=242 ms
64 bytes from 213.129.242.84: icmp_seq=4 ttl=47 time=237 ms
64 bytes from 213.129.242.84: icmp_seq=5 ttl=47 time=237 ms
[root@localhost user]# ping -c 5 google.com
PING google.com (74.125.159.103) 56(84) bytes of data.
64 bytes from yi-in-f103.1e100.net (74.125.159.103): icmp_seq=1 ttl=53 time=93.5 ms
64 bytes from yi-in-f103.1e100.net (74.125.159.103): icmp_seq=2 ttl=53 time=102 ms
64 bytes from yi-in-f103.1e100.net (74.125.159.103): icmp_seq=3 ttl=53 time=102 ms
64 bytes from yi-in-f103.1e100.net (74.125.159.103): icmp_seq=4 ttl=53 time=100 ms
64 bytes from yi-in-f103.1e100.net (74.125.159.103): icmp_seq=5 ttl=53 time=100 ms
--- google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4105ms
rtt min/avg/max/mdev = 93.542/99.901/102.981/3.360 ms
[root@localhost user]# ping -c 5 mirrors.rpmfusion.org
PING mirrors.rpmfusion.org (213.129.242.84) 56(84) bytes of data.
64 bytes from mirrors.rpmfusion.org (213.129.242.84): icmp_seq=1 ttl=47 time=237 ms
64 bytes from mirrors.rpmfusion.org (213.129.242.84): icmp_seq=2 ttl=47 time=236 ms
64 bytes from mirrors.rpmfusion.org (213.129.242.84): icmp_seq=3 ttl=47 time=232 ms
64 bytes from mirrors.rpmfusion.org (213.129.242.84): icmp_seq=4 ttl=47 time=238 ms
64 bytes from mirrors.rpmfusion.org (213.129.242.84): icmp_seq=5 ttl=47 time=237 ms
--- mirrors.rpmfusion.org ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4239ms
rtt min/avg/max/mdev = 232.687/236.464/238.093/1.950 ms
[root@localhost user]# ping -c 5 download.fedoraproject.org
PING wildcard.fedoraproject.org (80.239.156.215) 56(84) bytes of data.
64 bytes from mirrors.fedoraproject.org (80.239.156.215): icmp_seq=1 ttl=52 time=212 ms
64 bytes from mirrors.fedoraproject.org (80.239.156.215): icmp_seq=2 ttl=52 time=206 ms
64 bytes from mirrors.fedoraproject.org (80.239.156.215): icmp_seq=3 ttl=52 time=230 ms
64 bytes from mirrors.fedoraproject.org (80.239.156.215): icmp_seq=4 ttl=52 time=221 ms
64 bytes from mirrors.fedoraproject.org (80.239.156.215): icmp_seq=5 ttl=51 time=227 ms
--- wildcard.fedoraproject.org ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4230ms
rtt min/avg/max/mdev = 206.397/219.583/230.755/9.107 ms