[Ntp] Is the real MTU still 576?
Hal Murray <hmurray@megapathdsl.net> Mon, 15 June 2020 00:52 UTC
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From: Hal Murray <hmurray@megapathdsl.net>
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Date: Sun, 14 Jun 2020 17:52:22 -0700
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Subject: [Ntp] Is the real MTU still 576?
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There was mention in the Roughtime discussion that the official minimum MTU is still 576. It's easy for a NTP packet using NTS to get over that. If you drop a few packets, the request will have a few cookie placeholders and the response will have a few extra cookies. Is the real MTU still 576? What fraction of the net will carry Ethernet size packets of roughly 1500 bytes? Or rather, what fraction of the net can't carry 1500 byte packets and/or how well do things work there? Cookies are roughly 100 bytes. Should we limit requests to 3 cookie placeholders? (maybe 4) -- These are my opinions. I hate spam.
- [Ntp] Is the real MTU still 576? Hal Murray
- Re: [Ntp] Is the real MTU still 576? Steven Sommars
- Re: [Ntp] Is the real MTU still 576? Daniel Franke
- Re: [Ntp] Is the real MTU still 576? Watson Ladd
- Re: [Ntp] Is the real MTU still 576? Erik Kline