@JJC
Found this on another forum you could try which is to statically assign an IP to the receiver. A dish user mentioned their receiver was grabbing an IP already taken:
You can manually configure the IP address configuration.
1) Select Internet under settings
2) Select the Advanced Tab
3) Press Recall, Recall, and Play
4) A hidden third box will appear
5) The default is Automatic but you can select Manual.
6) You can now fill in the IP Address, Subnet Mask, Default Gateway, Primary DNS Server, and Secondary DNS Server.