Pretty sure that won¡¯t work. You¡¯ve got a class D IP, with different routing requirements.
192.168.5.18 and 192.168.1.4.
Unfortunately, we can¡¯t see the netmask in the x6100. If it¡¯s 255.255.255.0 - won¡¯t work. You¡¯ll need 255.255.0.0 to route between the two networks. Router is 192.168.1.4 - x6100 needs to be something in the 192.168.1.[1-254] range.