$ docker run -d --name tcpflowtest alpine:3.2 sleep 30d
fa95f9763ab56e24b3a8f0d9f86204704b770ffb0fd55d4fd37c59dc1601ed11
$ docker inspect -f '{{ .NetworkSettings.IPAddress }}' tcpflowtest
172.17.0.1
$ tcpflow -c -J -i docker0 'host 172.17.0.1 and port 80'
tcpflow: listening on docker0
