I have a Docker host with a tunnel listening on 127.0.0.1. There is a container that sends out traffic. I need to get this traffic into the tunnel.
The Docker host is running CentOS 7.2 and I have made the service inside the Docker container send everything to 172.17.42.1, which is the IP of the docker0 interface.
In firewalld, I have created a docker zone which looks like this:
docker (active)
interfaces: docker0
sources:
services:
ports:
masquerade: yes
forward-ports: port=514:proto=udp:toport=514:toaddr=127.0.0.1
icmp-blocks:
rich rules:
Checking with tcpdump, there is traffic on docker0 on port 514 but there's no traffic on lo on port 514.
What am I doing wrong?
