Assuming that eth0 is the external interface and eth1 is connected to the receiver, then
1. Disable eth1 in NetworkManager
2. In rc.local
ifconfig eth1 <ip> pointopoint 10.0.9.54
ifconfig eth1 <ip> pointopoint 10.0.9.54 route add -net 224.0.0.0 netmask 240.0.0.0 dev eth1