here my config.txt with a fix LAN-IP 192.168.0.25 and Router IP 192.168.0.1 (FritzBox)
I hope this could help:
[NETWORK]
hostname = pluto
ipaddr = 192.168.0.25
ipaddr_host = 192.168.0.1
netmask = 255.255.255.0
[WLAN]
ssid_wlan =
pwd_wlan =
ipaddr_wlan =
[USB_ETHERNET]
ipaddr_eth = 192.168.0.12
netmask_eth = 255.255.255.0
[SYSTEM]
xo_correction =
udc_handle_suspend = 0
[ACTIONS]
diagnostic_report = 0
dfu = 0
reset = 0
calibrate = 0