Paul
If you succeeded in use the installer, it may have adjusted your 'weewx.conf' already. If not, include the following:
[Interceptor]
# This section is for the network traffic interceptor driver.
# The driver to use:
driver = user.interceptor
# Specify the hardware device to capture. Options include:
# acurite-bridge - acurite internet bridge, smarthub, or access
# observer - fine offset WH2600/HP1000/HP1003, ambient WS2902
# lw30x - oregon scientific LW301/LW302
# lacrosse-bridge - lacrosse GW1000U/C84612 internet bridge
# wu-client - any hardware that uses the weather underground protocol
device_type = wu-client
mode = listen
port = 80
As the above, I used to use 'mode = listen'.
Also, certify that 'station_type = Interceptor'
Start WeeWX and verify status/log.
If all seems Ok, double-check by command underneath (as mentioned in driver notes):
PYTHONPATH=bin python bin/user/interceptor.py --device=acurite-bridge --mode=sniff --iface=eth0 --filter="src [Station-IP] and dst port 80"
Xant