Once the system is booted into the Xen kernel, check to verify the kernel and that Xen is running:
The above output should show that the Xen kernel is loaded and that Domain-0 (the host operating system) is running.
Note that for the default setup, networking for the guest OS (DomU) is bridged. This means that DomU's will get an IP address on the same network as Dom0. If a DHCP server provides addresses, it needs to be configured to give addresses to the guests. Another networking type can be selected by editing /etc/xen/xend-config.sxp