netifyd supports a '-F' filter option in 'bpf' notation to filter
packets from its consideration.
Add support for a uci 'filter' option. eg. filter to exclude SSDP
multicasts from a particularly noisy device:
option filter 'not (udp and dst 239.255.255.250 and dst port 1900 and src 192.168.1.5)'
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Integrate with uci to support 'enabled/disabled' startup option and
override netify's default auto network selection.
config netifyd
option enabled 0
option autoconfig 1
autoconfig: Use netify's in-built interface selection
else use 'internal/external_if' definitions.
Also persist important agent config across sysupgrade
agent.uuid, serial.uuid, site.uuid
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
