Giving full access to eth1 to docker container

Question

Can I run docker container that will have access to eth1. DSL provider is connected to eth1. I have default internet on eth0. I wish to docker container to dial pppoe on eth1 and apps in docker to use that internet with full access to internet without port mapping.

Answer 1

I don't see any reason why you cannot do what you are attempting. Add the flag

--cap-add=NET_ADMIN

to the docker run command. This will give the container sufficient privileges to create and configure interfaces.

Answer 2

The easiest option is to run with the host's network stack. You won't have any network isolation between containers, but eth1 will be there as if you were running a regular process.

To do this, use docker run --net=host [rest of run command]

It may also be possible to build your own bridge and link a veth from the container to the bridge to eth1. I haven't tried that, nor have I ever tried to control pppoe.