Check the network IP address and convert from dhcp to static.
From MyWiki
Edit the file /etc/sysconfig/network-scripts and make it similar to below :
DEVICE=eth0 HWADDR=52:54:00:B4:BA:6B TYPE=Ethernet UUID=023eb8aa-d6df-4355-be1a-e5e40465bdeb ONBOOT=yes NM_CONTROLLED=yes <---- Not sure about this !!! BOOTPROTO=static IPADDR=192.168.122.3 NETMASK=255.255.255.0 GATEWAY=192.168.122.1 DNS1=8.8.8.8