os.Exit(0)
		}
		return err
	}

	// Use the original binary location. This works with symlinks such that if
	// the file it points to has been changed we will use the updated symlink.
	argv0, err := exec.LookPath(os.Args[0])
	if err != nil {
		return err
	}

	// Invokes the execve system call.
	// Re-uses the same pid. This preserves the pid over multiple server-respawns.
	return syscall.Exec(argv0, os.Args, os.Environ())

   ([#122697](https://github.com/kubernetes/kubernetes/pull/122697), [@pacoxu](https://github.com/pacoxu))
- Used `errors.Is()` to handle errors returned by `LookPath()`.
   ([#122600](https://github.com/kubernetes/kubernetes/pull/122600), [@lzhecheng](https://github.com/lzhecheng))
- kube-proxy: Fixed `LoadBalancerSourceRanges` not working for `nftables` mode.