if ip != testCase.expectedResult {
				t.Fatalf("expected ip:%v got %v", testCase.expectedResult, ip)
			}
		})
	}
}

func mustParseIPAddr(str string) net.Addr {
	a, err := net.ResolveIPAddr("ip", str)
	if err != nil {
		panic("mustParseIPAddr")
	}
	return a
}
func mustParseIPNet(str string) net.Addr {
	_, n, err := netutils.ParseCIDRSloppy(str)
	if err != nil {