Who Me Too'd this solution

You need to login to the G1100 and reconfigure it to be a MoCA adapter. Login and go to My Network > Network Connections > Network (Home/Office) > Settings and change it's IP from 192.18.1.1 to 192.168.1.X then scroll down and disable the DHCP server and click Apply. The value of X can be any number not currently assigned from your Netgear. 

After that is done connect ethernet from the LAN or the Netgear to the LAN of the G1100 and also make sure the coax is connected to the G1100.