From owner-freebsd-mobile  Thu Sep 13  0:14:58 2001
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Date: Thu, 13 Sep 2001 09:14:40 +0200 (CEST)
From: Christophe <xtof@olympe.dnsalias.com>
To: Christophe <xtof@olympe.dnsalias.com>
Cc: Mikko Tyolajarvi <mikko@dynas.se>, <mobile@freebsd.org>
Subject: Re: ADSL, PPPoE and Xircom CEM56
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Hi ,

from

http://www.daemonnews.org/200101/pppoe.html

     NOTE: THIS SECTION IS OUTDATED

     As of December 2000, ppp now understands the option tcpmssfixup which
     implements what tcpmssd does below. This version of ppp is included
     in FreeBSD >=3D 4.3. This feature is enabled by default, but you can
     still add it anyway:

     enable tcpmssfixup

     to your ppp.conf. And that's all you have to do! (no need to muck
     with the kernel configuration either).
     Of course the explanation of what's going on is still valid.


and i have FreeBSD 4.3

and they say that the feature is enable by default :)


Christophe


On Thu, 13 Sep 2001, Christophe wrote:

> Hi,
>
> what i mean when i say 'it hangs' is:
> the FreeBSD box hangs (and not the internet
> connexion), and i have to power cycle it.
>
> I read the documentation you have sent to me
> and i will give (good i hope) news.
>
> Christophe
>
> On Wed, 12 Sep 2001, Mikko Tyolajarvi wrote:
>
> > In local.freebsd.mobile you write:
> >
> > >i have the following configuration
> >
> > >- FreeBSD 4.3
> > >- Toshiba Satellite 320CDT
> > >- Xircom CEM56 ethernet adapter
> > >- ADSL connection through PPP with
> > >the PPPoE protocol
> > >- this box also acts as a router for the
> > >local network
> >
> > >when the box is connected to the Internet,
> > >sometimes it hangs, and since few days i know
> > >how to reproduce:
> >
> > >ping -s 1464 InternetIP : OK
> > >ping -s 1465 InternetIP : HANGS
> >
> > >it seems that when the box receives too 'big'
> > >packets it hangs.
> >
> > Yes, it is a problem with PPPoE (silly protocol...), broken routers
> > and packet sizes.
> >
> > Upgrade to a newer version of ppp, which contains workarounds for this
> > problem.  I believe <http://www.freebsd.org/~brian/> contains both
> > binaries and sources you should be able to use.
> >
> > In <http://www.daemonnews.org/200101/pppoe.html>, section 6.3 you can
> > find an explanation of what is happening.
> >
> >   $.02,
> >   /Mikko
> > --
> >  Mikko Ty=F6l=E4j=E4rvi_______________________________________mikko@rsa=
security.com
> >  RSA Security
> >
>
>


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