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25 lines
521 B
Go
25 lines
521 B
Go
package bridge
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import (
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"fmt"
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"io/ioutil"
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)
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const (
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IPV4_FORW_CONF_FILE = "/proc/sys/net/ipv4/ip_forward"
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PERM = 0644
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)
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func SetupIPForwarding(i *Interface) error {
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// Sanity Check
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if i.Config.EnableIPForwarding == false {
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return fmt.Errorf("Unexpected request to enable IP Forwarding for: %v", *i)
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}
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// Enable IPv4 forwarding
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if err := ioutil.WriteFile(IPV4_FORW_CONF_FILE, []byte{'1', '\n'}, PERM); err != nil {
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return fmt.Errorf("Setup IP forwarding failed: %v", err)
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}
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return nil
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}
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