Bug 32040

Summary: 4.4-Release "set mtu" in ppp is broken with PPPoE
Product: Base System Reporter: jeh <jeh>
Component: binAssignee: Brian Somers <brian>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: 4.4-RELEASE   
Hardware: Any   
OS: Any   

Description jeh freebsd_committer freebsd_triage 2001-11-16 17:30:01 UTC 
	I have a system in Canada using PPPoE that the MTU of 1492
	doesn't seem to work for some of the M$ clients.  In RELENG_4_3
	I had been using the "set mtu 1450" as part of the configuration.
	After upgrading to RELENG_4_4 the "set mtu 1450" seems to be 
	ignored and always uses a MTU of 1492.  Downgrading only ppp to
	RELENG_4_3 fixes the problem.

	This machine is 800 miles away and in a different country.  I
	can do some simple debug from here, but I don't want to risk
	losing contact.
Comment 1 Brian Somers freebsd_committer freebsd_triage 2001-11-17 13:40:46 UTC 
Responsible Changed
From-To: freebsd-bugs->brian

I'll look after this
Comment 2 brian 2001-11-17 13:43:53 UTC 
> > 
> > http://www.freebsd.org/cgi/query-pr.cgi?pr=32040
> > 
> > >Category:       bin
> > >Responsible:    freebsd-bugs
> > >Synopsis:       4.4-Release "set mtu" in ppp is broken with PPPoE
> > >Arrival-Date:   Fri Nov 16 09:30:01 PST 2001
> 
> What can I do to help you fix this problem.  I quickly did a diff
> between RELENG_4_3 and RELENG_4_4 and there seem to be a lot of
> changes.  Any suggestion on which files to look more closely at?

Hi,

Would you be able to send me an LCP log from both before and after 
the upgrade ?  I can then determine what's changed in the way ppp 
negotiates.

You can fix things with ``set mtu max 1450''.

> Jim
> -- 
> /"\   ASCII Ribbon Campaign  .
> \ / - NO HTML/RTF in e-mail  .
>  X  - NO Word docs in e-mail .
> / \ -----------------------------------------------------------------
> jeh@FreeBSD.org      http://www.FreeBSD.org     The Power to Serve
> jim@TheHousleys.Net  http://www.TheHousleys.net
> jhousley@SimTel.Net  http://www.SimTel.Net
> ---------------------------------------------------------------------
> Your mouse has moved.
> Windows NT must be restarted for the change to take effect!
> 
> Reboot now?  [OK]

Cheers.
-- 
Brian <brian@freebsd-services.com>                <brian@Awfulhak.org>
      http://www.freebsd-services.com/        <brian@[uk.]FreeBSD.org>
Don't _EVER_ lose your sense of humour !      <brian@[uk.]OpenBSD.org>
Comment 3 jeh freebsd_committer freebsd_triage 2001-12-21 15:50:41 UTC 
Yes, using "set mtu max 1450" does work.  If this is required there
needs to be a heads-up in UPDATING.  Otherwise other people are going to
have some breakage, breakage becuase this does not seem to POLA.

Jim
-- 
/"\   ASCII Ribbon Campaign  .
\ / - NO HTML/RTF in e-mail  .
 X  - NO Word docs in e-mail .
/ \ -----------------------------------------------------------------
jeh@FreeBSD.org      http://www.FreeBSD.org     The Power to Serve
jim@TheHousleys.Net  http://www.TheHousleys.net
jhousley@SimTel.Net  http://www.SimTel.Net
---------------------------------------------------------------------
It's always a long day, 86400 doesn't fit into a short.
Comment 4 Brian Somers freebsd_committer freebsd_triage 2004-06-29 08:41:28 UTC 
State Changed
From-To: open->patched

I've mentioned using ``set mtu max'' in the man page, but it's a bit late to 
add something to UPDATING I'm afraid :(
Comment 5 Brian Somers freebsd_committer freebsd_triage 2004-07-15 10:45:29 UTC 
State Changed
From-To: patched->closed

This has been MFC'd