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Enable proxy_arp per interface #107

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Enable proxy_arp per interface #107

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4845415
upd: proxy_arp per interface
kvaps Apr 12, 2018
8806165
fix: error if proxy_arp isn't set
kvaps Apr 16, 2018
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2 changes: 0 additions & 2 deletions cmd/romana_agent/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -46,8 +46,6 @@ const (

var (
kernelParameter = []string{
"/proc/sys/net/ipv4/conf/default/proxy_arp",
"/proc/sys/net/ipv4/conf/all/proxy_arp",
"/proc/sys/net/ipv4/ip_forward",
}
)
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6 changes: 6 additions & 0 deletions cni/plugin.go
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Expand Up @@ -197,6 +197,12 @@ func CmdAdd(args *skel.CmdArgs) error {
return fmt.Errorf("Failed to create veth interfaces in namespace %v, err=(%s)", netns, err)
}

// enable proxy_arp
err = ioutil.WriteFile(fmt.Sprintf("/proc/sys/net/ipv4/conf/%s/proxy_arp", hostIface.Name), []byte("1"), 0)
if err != nil {
return fmt.Errorf("Failed to set proxy_arp for %s, err=(%s)", hostIface.Name, err)
}

// set proxy_delay to zero
err = ioutil.WriteFile(fmt.Sprintf("/proc/sys/net/ipv4/neigh/%s/proxy_delay", hostIface.Name), []byte("0"), 0)
if err != nil {
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