From dc86bdc3aae34707db63ab1e622a4140f8457167 Mon Sep 17 00:00:00 2001
From: Lars Ekman <lars.g.ekman@est.tech>
Date: Fri, 23 Dec 2022 13:23:02 +0100
Subject: [PATCH] Handle an empty scheduler ("")

---
 pkg/proxy/ipvs/proxier.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/proxy/ipvs/proxier.go b/pkg/proxy/ipvs/proxier.go
index 1562f3e6729..6fe7aabc81a 100644
--- a/pkg/proxy/ipvs/proxier.go
+++ b/pkg/proxy/ipvs/proxier.go
@@ -665,6 +665,10 @@ func CanUseIPVSProxier(ipvs utilipvs.Interface, ipsetver IPSetVersioner, schedul
 		return fmt.Errorf("ipset version: %s is less than min required version: %s", versionString, MinIPSetCheckVersion)
 	}
 
+	if scheduler == "" {
+		scheduler = defaultScheduler
+	}
+
 	// Check is any virtual servers (vs) are configured. If any, we assume
 	// that this is a kube-proxy re-start and skip the checks.
 	vservers, err := ipvs.GetVirtualServers()