sinkString = tc.ip.String()
			}))
			if allocs != tc.wantAllocs {
				t.Errorf("allocs=%d, want %d", allocs, tc.wantAllocs)
			}
		})
	}
}

func TestPrefixString(t *testing.T) {
	tests := []struct {
		ipp  Prefix
		want string
	}{
		{Prefix{}, "invalid Prefix"},
		{PrefixFrom(Addr{}, 8), "invalid Prefix"},