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Commit 0546d90 introduced the use of ipset to reduce the number
of rules that need to be processed per-packet, and make the code
a bit simpler.
But, docker's used on embedded kernels compiled without support
for ipset, so the change is too disruptive.
Replace the two ipset rules with a new chain that writes out the
rule's actions long-hand. So ..
This rule:
-A FORWARD -m set --match-set docker-ext-bridges-v4 dst \
-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
Is transformed into a per-bridge rule in new chain DOCKER-CT:
-A DOCKER-FORWARD -j DOCKER-CT
-A DOCKER-CT -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A DOCKER-CT -o bridge1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
And:
-A FORWARD -m set --match-set docker-ext-bridges-v4 dst -j DOCKER
Is transformed into a per-bridge rule in new chain DOCKER-BRIDGE:
-A DOCKER-FORWARD -j DOCKER-BRIDGE
-A DOCKER-BRIDGE -o docker0 -j DOCKER
-A DOCKER-BRIDGE -o bridge1 -j DOCKER
Signed-off-by: Rob Murray <rob.murray@docker.com>
libnetwork - networking for containers
Libnetwork provides a native Go implementation for connecting containers
The goal of libnetwork is to deliver a robust Container Network Model that provides a consistent programming interface and the required network abstractions for applications.
Design
Please refer to the design for more information.
Using libnetwork
There are many networking solutions available to suit a broad range of use-cases. libnetwork uses a driver / plugin model to support all of these solutions while abstracting the complexity of the driver implementations by exposing a simple and consistent Network Model to users.
Contributing
Want to hack on libnetwork? Docker's contributions guidelines apply.
Copyright and license
Code and documentation copyright 2015 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.