Connecting Metamask to local ethereum geth node

Trying to connect metamask running on my laptop to my local geth node running on a pi (so, NOT on the same laptop, but within the same local network).

My geth config is as follows:

geth --http --datadir /var/lib/goethereum  --cache 1536 --maxpeers 50  --http --http.addr "0.0.0.0" --http.corsdomain "*" --http.port "3333" 

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However after running sudo netstat -tulpn | grep LISTEN port 3333 does not show as a listening port.

Any idea what's wrong?