macOS Sierra: machine not listening

[loretoparisi]

Since macOS 10.12 Sierra upgrade, my docker privoxy seems to listen on the specified port

docker run -d -p 8118:8118 -p 9050:9050 rdsubhas/tor-privoxy-alpine

it is up and running

3efarh2cgt71        rdsubhas/tor-privoxy-alpine   "runsvdir /etc/servic"   About an hour ago   Up About an hour          0.0.0.0:8118->8118/tcp, 0.0.0.0:9050->9050/tcp   ecstatic_kalam

but

$ curl --proxy localhost:8118 http://icanhazip.com/

does not start LISTEN.

On Ubuntu I can see it

(ubuntu)
$ netstat -atn | grep LISTEN | grep 90
tcp6       0      0 :::9050                 :::*                    LISTEN     
tcp6       0      0 :::9051                 :::*                    LISTEN     
tcp6       0      0 :::9052                 :::*                    LISTEN  

while no macOS Sierra it does not seem to

(macOS)
$ netstat -atn | grep LISTEN | grep 90