Changes according to the approved KEP. SCTP is supported for HostPort and LoadBalancer. Alpha feature flag SCTPSupport controls the support of SCTP. Kube-proxy config parameter is removed.

cmd/kube-proxy/app/server_others.go

@@ -166,7 +166,6 @@ func newProxyServer(
 			recorder,
 			healthzUpdater,
 			config.NodePortAddresses,
-			config.SCTPUserSpaceNode,
 		)
 		if err != nil {
 			return nil, fmt.Errorf("unable to create proxier: %v", err)
@@ -206,7 +205,6 @@ func newProxyServer(
 			healthzServer,
 			config.IPVS.Scheduler,
 			config.NodePortAddresses,
-			config.SCTPUserSpaceNode,
 		)
 		if err != nil {
 			return nil, fmt.Errorf("unable to create proxier: %v", err)

cmd/kube-proxy/app/server_test.go

@@ -211,7 +211,6 @@ udpIdleTimeout: 123ms
 nodePortAddresses:
   - "10.20.30.40/16"
   - "fd00:1::0/64"
-sctpUserSpaceNode: false
 `
 
 	testCases := []struct {
@@ -326,7 +325,6 @@ sctpUserSpaceNode: false
 			ResourceContainer:  "/foo",
 			UDPIdleTimeout:     metav1.Duration{Duration: 123 * time.Millisecond},
 			NodePortAddresses:  []string{"10.20.30.40/16", "fd00:1::0/64"},
-			SCTPUserSpaceNode:  false,
 		}
 
 		options := NewOptions()

cmd/kubeadm/app/util/config/testdata/conversion/master/internal.yaml

@@ -61,7 +61,6 @@ ComponentConfigs:
     OOMScoreAdj: -999
     PortRange: ""
     ResourceContainer: /kube-proxy
-    SCTPUserSpaceNode: false
     UDPIdleTimeout: 250ms
   Kubelet:
     Address: 1.2.3.4

cmd/kubeadm/app/util/config/testdata/conversion/master/v1alpha2.yaml

@@ -64,7 +64,6 @@ kubeProxy:
     oomScoreAdj: -999
     portRange: ""
     resourceContainer: /kube-proxy
-    sctpUserSpaceNode: false
     udpIdleTimeout: 250ms
 kubeletConfiguration:
   baseConfig:

cmd/kubeadm/app/util/config/testdata/conversion/master/v1alpha3.yaml

@@ -80,7 +80,6 @@ nodePortAddresses: null
 oomScoreAdj: -999
 portRange: ""
 resourceContainer: /kube-proxy
-sctpUserSpaceNode: false
 udpIdleTimeout: 250ms
 ---
 address: 1.2.3.4

cmd/kubeadm/app/util/config/testdata/defaulting/master/defaulted.yaml

@@ -75,7 +75,6 @@ nodePortAddresses: null
 oomScoreAdj: -999
 portRange: ""
 resourceContainer: /kube-proxy
-sctpUserSpaceNode: false
 udpIdleTimeout: 250ms
 ---
 address: 0.0.0.0