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SubjectRe: Linux 2.4.27 SECURITY BUG - TCP Local and REMOTE(verified) Denial of Service Attack
On Tue, 21 Sep 2004 20:32:12 +0200
Florian Weimer <fw@deneb.enyo.de> wrote:

> > But then you get PMTU problems...
>
> PMTU discovery is not an issue because it's turned off anyway, at
> least by default.

It's on by default, for both TCP and UDP in the kernel,
and has been so for a long time.

Why would it be off by default?

If you disable PMTU discovery, say goodbye to TCP
performance.
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