Yes, indeed, it is possible to give a hint to local router (for PIO withdrawal) from OSPF/RIP, especially if router participate in DHCP-PD and understand what particular prefix to monitor in OSPF. I believe that such solution was never documented and probably never implemented. It would have many proc and cons. It is very debatable. Ed/
-----Original Message----- From: Marco Moock via NANOG <nanog@lists.nanog.org> Sent: Friday, June 19, 2026 09:27 To: North American Network Operators Group <nanog@lists.nanog.org> Cc: Marco Moock <mm@dorfdsl.de> Subject: Re: IPv4 flag day
Am 19.06.26 um 08:16 schrieb Vasilenko Eduard:
OSPF and RIP are not capable in principle to propagate address space for delegation. IPv6 source address is dynamic, PA (provider aggregated address space) may become invalid after 1 link down.
RIP/OSPF IIRC can also withdraw routes. Even if that is a crappy solution combined with DHCPv6-PD and dynamic prefixes.
-- Gruß Marco
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