From d46cb47e126fcd62f86a3b72efca55e18def1100 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8F=A9=E8=BD=A9?= <hengxuan.sh@alibaba-inc.com>
Date: Mon, 25 Mar 2024 10:48:30 +0800
Subject: [PATCH] fix the bug of parse empty cidr

---
 pkg/networkengine/routedriver/vxlan/vxlan.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkg/networkengine/routedriver/vxlan/vxlan.go b/pkg/networkengine/routedriver/vxlan/vxlan.go
index dbe5f60..aedc325 100644
--- a/pkg/networkengine/routedriver/vxlan/vxlan.go
+++ b/pkg/networkengine/routedriver/vxlan/vxlan.go
@@ -455,7 +455,11 @@ func (vx *vxlan) calIPSetOnNode(network *types.Network) map[string]*netlink.IPSe
 			continue
 		}
 		for _, srcCIDR := range nodeInfo.Subnets {
-			_, ipNet, _ := net.ParseCIDR(srcCIDR)
+			_, ipNet, err := net.ParseCIDR(srcCIDR)
+			if err != nil {
+				klog.Errorf("parse node subnet %s error %s", srcCIDR, err.Error())
+				continue
+			}
 			ones, _ := ipNet.Mask.Size()
 			entry := &netlink.IPSetEntry{
 				IP:      ipNet.IP,