private := tt.ip.IsPrivate()
			if private != tt.private {
				t.Errorf("IsPrivate(%v) = %v; want %v", tt.ip, private, tt.private)
			}

			unspecified := tt.ip.IsUnspecified()
			if unspecified != tt.unspecified {
				t.Errorf("IsUnspecified(%v) = %v; want %v", tt.ip, unspecified, tt.unspecified)
			}
		})
	}
}

func TestAddrWellKnown(t *testing.T) {
	tests := []struct {
		name string
		ip   Addr