I have a virtual machine on Vsphere 5.0 running Ubuntu 12.04 when i put dinamic IP (/etc/network/interfaces) iface eth0 inet dhcp Ubuntu have network and i can do ping to google for example (8.8.8.8) but when i put static IP and configure resolv.conf My interfaces file: auto eth0 iface eth0 inet static address 192.168.1.54 gateway 192.168.1.1 netmask 255.255.255.0 it lost the network and i cant do ping to anything...i dont understand where is the problem... Thanks a lot