sortedIPList: []string{"10.0.0.1", "192.168.0.1", "127.0.0.1"},
		},
	}
	for i, testCase := range testCases {
		gotIPList := sortIPs(testCase.ipList)
		if !reflect.DeepEqual(testCase.sortedIPList, gotIPList) {
			t.Errorf("Test %d: Expected %s, got %s", i+1, testCase.sortedIPList, gotIPList)
		}
	}
}

func TestMustGetLocalIP4(t *testing.T) {
	testCases := []struct {