On Mon, Jun 02, 2025 at 11:08:02PM +0200, Gert Doering wrote:

Hi,

> On Mon, Jun 02, 2025 at 07:53:22PM +0200, Piotr Strzyzewski wrote:
> > > That said, if I understand the DB limitations correctly, every level
> > > of SUB-ALLOCATED PA is automatically 1 bit longer - so there is an
> > > upper limit anyway.
> > 
> > It is not. I actually tested it using a random /24 in the TEST database.
> > First, I created a /24 inetnum object with the ALLOCATED PA status, and
> > then 255 inetnum objects with the SUB-ALLOCATED PA status - ranging from
> > 192.0.2.0 - 192.0.2.254 down to 192.0.2.0 - 192.0.2.0. As a side note,
> > the last one doesn't make much sense, since it's not possible to create
> > any smaller inetnum object with ASSIGNED PA status.
> 
> That is not surprising - but I was talking "depth", not "breadth".

Same here. I was talking "depth" as well.

> So the maximum depth of nesting in a /24 is 8, then you hit /32, and

My observation is that it was 1 allocation having 255 sub-allocations
nested one in another. Like 192.0.2.0 - 192.0.2.0 nested in 192.0.2.0 -
192.0.2.1 nested in 192.0.2.0 - 192.0.2.2 nested ... in 192.0.2.0 -
192.0.2.254 (last, most outer sub-allocation) nested in 192.0.2.0 -
192.0.2.255 (allocation). So the maximum depth of nesting in a /24 is
255.

> I think this is what Denis was asking about.
> 
> > On a more pragmatic note - why don't we ask those who use more than one
> > or two levels of sub-allocations about their business case? This way, we
> > might better understand the actual problem.
> 
> Is there a problem we need to fix?

No idea. This is what I would like to find out.

Best,
Piotr

-- 
Piotr Strzyżewski
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