fix getting service cluster ips (#4206)

Signed-off-by: zhangzujian <zhangzujian.7@gmail.com>

pkg/util/k8s.go

@@ -4,7 +4,6 @@ import (
  "fmt"
  "net"
  "net/url"
- "slices"
  "strings"
  "time"
 
@@ -64,7 +63,18 @@ func ServiceClusterIPs(svc v1.Service) []string {
  if len(svc.Spec.ClusterIPs) == 0 && svc.Spec.ClusterIP != v1.ClusterIPNone && svc.Spec.ClusterIP != "" {
  return []string{svc.Spec.ClusterIP}
  }
- return slices.Clone(svc.Spec.ClusterIPs)
+
+ ips := make([]string, 0, len(svc.Spec.ClusterIPs))
+ for _, ip := range svc.Spec.ClusterIPs {
+ if net.ParseIP(ip) == nil {
+ if ip != "" && ip != v1.ClusterIPNone {
+ klog.Warningf("invalid cluster IP %q for service %s/%s", ip, svc.Namespace, svc.Name)
+ }
+ continue
+ }
+ ips = append(ips, ip)
+ }
+ return ips
 }
 
 func LabelSelectorNotEquals(key, value string) (labels.Selector, error) {