RE: IPv4 flag day

Small business may have a small routed network (a few router hops),
There is no mechanism to propagate PA address withdrawal through a few hops.

By the way, it should not be RA lifetime because router may have a few connections to ISPs, not all down at the same time.
It should be PIO (specific prefix) on the last hop.
Eduard
> -----Original Message-----
> From: Niels Bakker via NANOG <[email protected]>
> Sent: Thursday, June 18, 2026 16:22
> To: [email protected]
> Cc: Niels Bakker <[email protected]>
> Subject: Re: IPv4 flag day
> 
> * Matthew Petach [Wed 17 Jun 2026, 03:24 CEST]:
> >Unfortunately, there's nothing that tells the downstream host "hey,
> >stop using that address as a source address for connections".
> 
> 0 lifetime RAs.
> 
> 
> 	-- Niels.
> 
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