From: David Miller <davem@davemloft.net>
To: hannes@stressinduktion.org
Cc: netdev@vger.kernel.org, fweimer@redhat.com
Subject: Re: [PATCH net-next] ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE
Date: Wed, 30 Oct 2013 17:36:08 -0400 (EDT) [thread overview]
Message-ID: <20131030.173608.2156276556221568210.davem@davemloft.net> (raw)
In-Reply-To: <20131030200725.GB9093@order.stressinduktion.org>
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Wed, 30 Oct 2013 21:07:25 +0100
> On Tue, Oct 29, 2013 at 01:04:25PM +0100, Hannes Frederic Sowa wrote:
>> I really tried hard to find alternatives or even a way to enable
>> the protection automatically given that at least unbound does apply
>> IP_PMTUDISC_DONT to its sockets already. These are the reasons why I
>> came up with the new IP_PMTUDISC_INTERFACE value:
>
> Sorry to bother you but I would really love to hear your feedback on my
> reasoning so I can try to come up with a solution you would be happy with.
All I've read is that administrators cannot be relied upon to
configure their systems properly for the requirements they have.
And that is a non-argument for adding this new socket option as far as
I'm concerned.
"I strongly do not trust path MTU information" has a scope as small as
a route or an interface, it doesn't go down to the socket or
application level at all.
Please stop pretending that it does.
next prev parent reply other threads:[~2013-10-30 21:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-26 20:11 [PATCH net-next] ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE Hannes Frederic Sowa
2013-10-29 4:08 ` David Miller
2013-10-29 7:36 ` Florian Weimer
2013-10-29 19:38 ` David Miller
2013-10-29 12:04 ` Hannes Frederic Sowa
2013-10-29 12:50 ` Hannes Frederic Sowa
2013-10-30 20:07 ` Hannes Frederic Sowa
2013-10-30 21:36 ` David Miller [this message]
2013-10-30 22:58 ` Hannes Frederic Sowa
2013-10-31 4:29 ` David Miller
2013-10-31 9:42 ` Hannes Frederic Sowa
2013-11-04 23:25 ` Hannes Frederic Sowa
2013-11-05 0:52 ` David Miller
2013-11-05 0:58 ` Hannes Frederic Sowa
-- strict thread matches above, loose matches on Subject: below --
2013-11-05 1:24 Hannes Frederic Sowa
2013-11-06 2:57 ` David Miller
2013-11-06 3:11 ` Hannes Frederic Sowa
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