Re: IPv4 flag day

Marco Moock via NANOG <[email protected]> Fri, 19 Jun 2026 16:36:22 +0200
Newsgroups gmane.org.operators.nanog
Message-ID <[email protected]>
Am 19.06.26 um 05:30 schrieb Gary Sparkes via NANOG:
> For ICMP, we really only need timeout exceeded and echo request/reply, packet too large isn't required (and that's what breaks PMTU) nor is dest unreach.

Are there any reason to block ICMP dest unreachable?

I never saw one.

Breaking PMTU is a PITA - for both IPv6 and IPv4.

-- 
Gruß
Marco

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