Base: 30000,
					Size: 8192,
				},
			},
			want: 128,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := calculateRangeOffset(tt.args.pr); got != tt.want {
				t.Errorf("calculateRangeOffset() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestNodePortMetrics(t *testing.T) {
	clearMetrics()
	// create node port allocator

	if family == api.IPv4Protocol {
		ipLast = ipLast.Prev()
	}
	// KEP-3070: Reserve Service IP Ranges For Dynamic and Static IP Allocation
	// calculate the subrange offset
	rangeOffset := calculateRangeOffset(cidr)
	offsetAddress, err := addOffsetAddress(ipFirst, uint64(rangeOffset))
	if err != nil {
		return nil, err
	}
	a := &Allocator{
		cidr:            cidr,
		prefix:          prefix,