Can't connect to oracle db on external network from container

In bridged mode it is possible to connect changing MTU of network bridge
docker network create -d bridge
–subnet=172.28.0.0/16
–ip-range=172.28.5.0/24
–attachable
–gateway=172.28.5.1
–opt com.docker.network.driver.mtu=1100
api_bridge

related issue https://github.com/docker/for-linux/issues/594