Use `ipFamilyPolicy: RequireDualStack` for dual-stack kube-dns (#8984)

Signed-off-by: Aofei Sheng <aofei@aofeisheng.com> (cherry picked from commit 8d2c40cd) Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

Use `ipFamilyPolicy: RequireDualStack` for dual-stack kube-dns (#8984)
65495bb6 · Aofei Sheng · Brad Davidson · db378476 · 65495bb6
Commit 65495bb6 authored Jan 09, 2024 by Aofei Sheng Committed by Brad Davidson Jan 18, 2024
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server.go pkg/server/server.go +3 -3

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--- a/pkg/server/server.go
+++ b/pkg/server/server.go
@@ -275,9 +275,9 @@ func stageFiles(ctx context.Context, sc *Context, controlConfig *config.Control)
 	}
 	dataDir = filepath.Join(controlConfig.DataDir, "manifests")
-	dnsIPFamilyPolicy := "PreferDualStack"
+	dnsIPFamilyPolicy := "SingleStack"
-	if len(controlConfig.ClusterDNSs) == 1 {
+	if len(controlConfig.ClusterDNSs) > 1 {
-		dnsIPFamilyPolicy = "SingleStack"
+		dnsIPFamilyPolicy = "RequireDualStack"
 	}
 	templateVars := map[string]string{