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moby--moby/libnetwork/drivers/bridge/setup_ip_forwarding.go
Jana Radhakrishnan e797f80ad4 Added driver specific config support
- Added api enhancement to pass driver specific config
  - Refactored simple bridge driver code for driver specific config
  - Added an undocumented option to add non-default bridges without
    manual pre-provisioning to help libnetwork testing
  - Reenabled libnetwork test to do api testing
  - Updated README.md

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
2015-04-15 18:32:07 +00:00

25 lines
559 B
Go

package bridge
import (
"fmt"
"io/ioutil"
)
const (
ipv4ForwardConf = "/proc/sys/net/ipv4/ip_forward"
ipv4ForwardConfPerm = 0644
)
func setupIPForwarding(config *Configuration, i *bridgeInterface) error {
// Sanity Check
if config.EnableIPForwarding == false {
return fmt.Errorf("Unexpected request to enable IP Forwarding for: %v", *i)
}
// Enable IPv4 forwarding
if err := ioutil.WriteFile(ipv4ForwardConf, []byte{'1', '\n'}, ipv4ForwardConfPerm); err != nil {
return fmt.Errorf("Setup IP forwarding failed: %v", err)
}
return nil
}