Common operational misconceptions

George Bonser gbonser at
Mon Feb 20 16:47:42 UTC 2012

> George Bonser wrote:
> >> It is seemingly working well means there is not much PMTU changes,
> >> which means we had better assumes some PMTU (1280B, for example) and
> >> use it without PMTUD.
> > It depends on the OS and the method being used.  If you set the
> option
> > to "2" on Linux, it will do MTU probing constantly and react to MTU
> > changes.
> It actually does nothing.

Must be magic then, because it works for me.  I've got a few dozen servers with MTU 7500 that aren't having a bit of trouble talking to anyone.

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