From ff145ff721b1047719c7cbafbea7a5fdf15c390d Mon Sep 17 00:00:00 2001
From: zhangzujian <zhangzujian.7@gmail.com>
Date: Wed, 17 Aug 2022 14:37:17 +0800
Subject: [PATCH] fix duplicate log for tunnel interface decision

---
 pkg/daemon/config.go           | 6 +++++-
 pkg/daemon/controller_linux.go | 4 ++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkg/daemon/config.go b/pkg/daemon/config.go
index ab6fd2902b3..57c35df91f4 100644
--- a/pkg/daemon/config.go
+++ b/pkg/daemon/config.go
@@ -28,6 +28,8 @@ import (
 
 // Configuration is the daemon conf
 type Configuration struct {
+	// interface being used for tunnel
+	tunnelIface             string
 	Iface                   string
 	DPDKTunnelIface         string
 	MTU                     int
@@ -205,7 +207,10 @@ func (config *Configuration) initNicConfig(nicBridgeMappings map[string]string)
 		if len(encapIP) == 0 {
 			return fmt.Errorf("iface %s has no valid IP address", tunnelNic)
 		}
+
+		klog.Infof("use %s as tunnel interface", iface.Name)
 		mtu = iface.MTU
+		config.tunnelIface = iface.Name
 	}
 
 	encapIsIPv6 := util.CheckProtocol(encapIP) == kubeovnv1.ProtocolIPv6
@@ -278,7 +283,6 @@ func findInterface(ifaceStr string) (*net.Interface, error) {
 	}
 	for _, iface := range ifaces {
 		if ifaceRegex.MatchString(iface.Name) {
-			klog.Infof("use %s as tunnel interface", iface.Name)
 			return &iface, nil
 		}
 	}
diff --git a/pkg/daemon/controller_linux.go b/pkg/daemon/controller_linux.go
index 90c81509968..93c6b998bd8 100644
--- a/pkg/daemon/controller_linux.go
+++ b/pkg/daemon/controller_linux.go
@@ -500,6 +500,10 @@ func (c *Controller) loopEncapIpCheck() {
 			klog.Errorf("iface %s has no ip address", nodeTunnelName)
 			return
 		}
+		if iface.Name != c.config.tunnelIface {
+			klog.Infof("use %s as tunnel interface", iface.Name)
+			c.config.tunnelIface = iface.Name
+		}
 
 		// if assigned iface in node annotation is down or with no ip, the error msg should be printed periodically
 		if c.config.Iface == nodeTunnelName {