Here are the contents of my RBFeeder.ini
[client]
network_mode=false
log_file=/var/log/rbfeeder.log
key=<feeder#>
sn=EXTRPI635251
[network]
mode=raw
external_port=30005
external_host=127.0.0.1
[mlat]
autostart_mlat=true
#mlat_cmd=/usr/bin/python3.9 /usr/bin/mlat-client
[dump978]
#dump978_enabled=true