*/

package util

import (
	"net"

	"k8s.io/klog/v2"
	netutils "k8s.io/utils/net"
)

// IPPart returns just the IP part of an IP or IP:port or endpoint string. If the IP
// part is an IPv6 address enclosed in brackets (e.g. "[fd00:1::5]:9999"),
// then the brackets are stripped as well.
func IPPart(s string) string {
	if ip := netutils.ParseIPSloppy(s); ip != nil {
		// IP address without port
		return s
	}

		{"1.2.3.4::9999", "", "too many colons"},
		{"1.2.3.4:[0]", "", "unexpected '[' in address"},
		{"1.2.3:8080", "", "invalid ip part"},
	}

	for _, tc := range testCases {
		ip := IPPart(tc.endpoint)
		if tc.expectedError == noError {
			if ip != tc.expectedIP {
				t.Errorf("Unexpected IP for %s: Expected: %s, Got %s", tc.endpoint, tc.expectedIP, ip)
			}
		} else if ip != "" {

	for _, epSvcPair := range endpointsUpdateResult.DeletedUDPEndpoints {
		if svcInfo, ok := svcPortMap[epSvcPair.ServicePortName]; ok {
			endpointIP := proxyutil.IPPart(epSvcPair.Endpoint)
			nodePort := svcInfo.NodePort()
			var err error
			if nodePort != 0 {
				err = ct.ClearEntriesForPortNAT(endpointIP, nodePort, v1.ProtocolUDP)
				if err != nil {