I've searched for 5 days on the Internet for a solution to my problem, and I already did almost everything, and I still have no positive results.
I installed 12.04 LTS in VirtualBox. I'm using bridged mode in the VirtualBox network preferences. I use as a router a Routerboard 450, with no proxy, DHCP with static IP to my virtual Ubuntu, and I use OpenDNS IPs to resolve the host names.
I'm new to the Linux world, I've started this week and I really want to solve this big problem. I don't want just to leave Ubuntu and start with CentOS or Debian, etc.
I've already tried to reinstall Ubuntu, I've disabled selinux, purged
network-manager and did the configuration manually.
I really don't remember what more I did.
I can ping Google, the IP of OpenDNS also, I've tried to use Google DNS, I've changed the resolv.conf.
Can someone help me?