On Thu, Aug 22, 2024 at 07:51:04AM -0600, Theo de Raadt wrote:
> Tom Smyth <tom.smyth@wirelessconnect.eu> wrote:
> 
> > so Arista and Cisco say area id is a 32 bit value  0-(2^32)-1   expressed as a number
> > or dotted decimal IP 
> 
> Sure, but "dotted decimal IP" is a pretty vague term, because everyone inherited
> the same flawed pre-cidr conversion functions.  That vagueness is the problem.
> 
> So therefore it seems more important that we know it isn't used in practice.
> That seems to have been checked, and I think we can rush ahead now.  Also,
> if someone runs into this, their non-strict area can easily be edited into a
> the strict numeric form, so there's no real hazard here, the whole 32-bit numeric
> range remains useable.

Yes, the question is if people use an area id of 1.2 or 1.2.3 and expect it to
work. ospfd now longer accepts those and that is good so.

I think common practice is to use 0.0.0.0 or 0 and other areas as a.b.c.d
at least that is what I have seen.

-- 
:wq Claudio