Conflict with Docker

Question

Conflict with Docker

ymmt2005 opened this issue 5 years ago · comments

Yamamoto, Hirotaka commented 5 years ago

Describe the bug

Docker, when installed, changes the policy of FORWARD chain in filter table
from ACCEPT to DROP. This blocks communication between VMs and containers
inside placemat.

Placemat adds iptables rules only for networks that are connected to the host OS.

To Reproduce

Install docker
Run placemat with internal networking

Expected behavior

Machines and/or containers can communicate each other using internal networks.

Workaround

$ sudo iptables -P FORWARD ACCEPT