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Date: Sun, 1 Sep 2013 00:40:20 -0700
Message-ID: <CAN0CFw08waeCV7qTkiDat9x6gnwiqRMkAtK8_DycGJzD7dHn+A@mail.gmail.com>
Subject: Re: [gentoo-user] PMTUD
From: Grant <emailgrant@gmail.com>
To: Gentoo mailing list <gentoo-user@lists.gentoo.org>
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>> How is PMTUD enabled/disabled on Gentoo?  I've recently been made
>> aware of the existence of MTU and I'm wondering if mine is set
>> properly for a cell phone tethered connection.

Thanks Mick.  Can you generally rely on PMTUD to set the MTU optimally
or should this be experimented with when changing connections?

- Grant


> # sysctl -A | grep -i pmtu
> net.ipv4.ip_no_pmtu_disc = 0
> net.ipv4.route.min_pmtu = 552
>
> Use echo to change a value as required and then modify your /etc/sysctl.d/
> accordingly (first read /etc/sysctl.d/README)