If you have one of the new NAT KVM from HostDoc that comes with Internal networking, you will need to manually add the gateway so that you can access the Internet.
If you already know how to add a gateway in your OS, you can skip ahead and add it yourself, the IP is 10.255.58.222
In Debian or Ubuntu
If you’re using Debian or Ubuntu, you can add the gateway by editing the /etc/network/interfaces file:
echo "gateway 10.255.58.222" >> /etc/network/interfaces
You can apply this by either rebooting, or restarting the networking:
systemctl restart networking
Just run this line to add the gateway to your eth1 config:
echo "GATEWAY=10.255.58.222" >> /etc/sysconfig/network-scripts/ifcfg-eth1
Then restart networking:
service network restart
Needs to be added.