[DNSOP] Re: [v6ops] Re: Re: Fwd: New Version Notif ication - draft-ietf-dnsop-avoid-fragmentation-18.txt

Philip Homburg wrote on 05/07/2024 11:01:
> Can we go back to reality? There is no PMTU discovery for DNS replies
> over UDP that works at scale. It doesn't work, it never worked.

specifically, short of implementing end-to-end circuits, it can't work 
reliably. There is no way for an endpoint to detect intermediate 
topology changes between itself and another endpoint, short of heuristic 
and/or post-hoc interpretation of what's going on in the data plane.

Nick

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