No PPP in 2.6.16 Kernel
Paul Howarth
paul at city-fan.org
Wed Jun 14 07:54:01 UTC 2006
On Wed, 2006-06-14 at 02:57 -0400, Dave Jones wrote:
> On Wed, Jun 14, 2006 at 06:30:15AM +0000, David Hough wrote:
> > This one has me baffled. I have a system running quite happily with
> > kernel 2.6.15-1.2054_FC5 and I use it with pptp to establish a VPN
> > connection. This works fine. However, both my attempts to use 2.6.16
> > upgrade kernels (both 2111 and 2122, shown below) have failed due to the
> > errors as found in the system log.
> >
> > The strange thing is that I've got another machine where the upgrade
> > went quite happily and the PPP modules have installed without arguments.
> >
> > Can anyone tell me what I'm missing? I assume I've lost a module
> > somewhere although the only one that ppp_generic appears to require is
> > slhc and that's present.
> > =========================
> > Jun 10 09:46:39 robinton modprobe: FATAL: Error inserting ppp_generic
> > (/lib/modules/2.6.16-1.2122_FC5/kernel/d
> > rivers/net/ppp_generic.ko): Unknown symbol in module, or unknown
> > parameter (see dmesg)
> > Jun 10 09:46:39 robinton kernel: CSLIP: code copyright 1989 Regents of
> > the University of California
> > Jun 10 09:46:39 robinton kernel: ppp_generic: Unknown symbol
> > class_simple_device_add
> > Jun 10 09:46:39 robinton kernel: ppp_generic: Unknown symbol
> > class_simple_destroy
> > Jun 10 09:46:39 robinton kernel: ppp_generic: Unknown symbol
> > class_simple_device_remove
> > Jun 10 09:46:39 robinton kernel: ppp_generic: Unknown symbol
> > class_simple_create
>
> Hmm, I vaguely remember this from quite a while back.
> iirc, it was caused by the pptp package bundling its own (out of date)
> ppp_generic module. The kernel rpm does include ppp_generic.ko, and it's
> not reliant upon any of those symbols.
MPPE support in pptp prior to kernel 2.6.15 required an out-of-tree
ppp_mppe module, which in turn required a patched ppp_generic. From
2.6.15, MPPE support is included in the upstream kernel and no fiddling
with out-of-tree modules is needed.
Paul.
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