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.
Responsible Changed From-To: freebsd-bugs->brian I'll look after this
> > > > 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>
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.
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 :(
State Changed From-To: patched->closed This has been MFC'd