Maybe a little confusing.

Normally when a machine gets on the network is will request its network settings via DHCP. This gives out the IP Address/Netmask/gateway/DNS Servers etc.

The X-1 Takes these ok.. but then ignores the DNS Server sent from the DHCP Server and uses 8.8.8.8 instead (it seems its hard coded)

There is no way to change this DNS Setting at all as if you go via the GUI and try and change it.. you cannot.

8.8.8.8 will work ok for most people (but not all people as they may not have access to 8.8.8.8 or may run it without an internet connection directly). Some people may want to change the DNS Server/Use the one given out via DHCP (which should be the default) but you can't.