pppd demand dialing in old kernels

My firewall machine is an old 486 that has been running a 2.0.34 kernel
with pppd 2.3.something for several years now and has been a champ. I now
have a need to do some VPN stuff through it and upgraded it to 2.0.39.

The pppd then refused to do demand dialing, complaining "demand dialling
is not supported by kernel driver version 2.2.0." OK, so I pick-up pppd
2.4.1 and compile it up. No change. Curse and mutter and start googling
away. It seems that there were some kernel mods that came with pppd that
had to be applied to kernels versions prior to something like 2.0.37.
They were no a part of the pppd 2.4.1 tar ball I picked up. I found an
2.3.5 pppd with the mods and applied them to the 2.0.39 kernel. Same
problem.

Anybody with any hints?

PS, please don't mention diald. I'm sure it works great but does a lot
more than I need and I would prefer to avoid it if I could.

PPS please don't mention a kernel base newer than 2.0.x. This 486 with 8
meg memory and a 200 meg disk is doing just fine on this old stuff. I'm
afraid anything newer is going to be too much for it.

--
Frank Stutzman
Bonanza N494B "Hula Girl"
Hood River, OR

Frank Stutzman <(E-Mail Removed)> wrote:
> My firewall machine is an old 486 that has been running a 2.0.34 kernel
> with pppd 2.3.something for several years now and has been a champ. I now
> have a need to do some VPN stuff through it and upgraded it to 2.0.39.

> The pppd then refused to do demand dialing, complaining "demand dialling
> is not supported by kernel driver version 2.2.0." OK, so I pick-up pppd
> 2.4.1 and compile it up. No change. Curse and mutter and start googling
> away. It seems that there were some kernel mods that came with pppd that
> had to be applied to kernels versions prior to something like 2.0.37.
> They were no a part of the pppd 2.4.1 tar ball I picked up. I found an
> 2.3.5 pppd with the mods and applied them to the 2.0.39 kernel. Same
> problem.

I think that pppd 2.4.0 is the only pppd 2.4.x version that works with
pre-2.4.x kernels - unless the kernel PPP code has been revised in the
2.0.39. It hadn't been revised in the 2.0.38 kernel, which is the last
of that series I used.

> Anybody with any hints?

Get the pppd 2.3.11 source, from ftp.samba.org in pub/ppp. It appears,
at least according to it's README.linux file, to have the necessary
kernel PPP code (in the section entitled "Installation procedure:").
You'll have to rebuild the kernel after building pppd 2.3.11.

--
Clifford Kite Email: "echo xvgr_yvahk-(E-Mail Removed)|rot13"
PPP-Q&A links, downloads: http://ckite.no-ip.net/
/* Speak softly and carry a sucker rod (See man syslogd, footnote to
recommendation 4 under SECURITY THREATS). */

Clifford Kite <(E-Mail Removed)> wrote:

> Get the pppd 2.3.11 source, from ftp.samba.org in pub/ppp. It appears,
> at least according to it's README.linux file, to have the necessary
> kernel PPP code (in the section entitled "Installation procedure:").
> You'll have to rebuild the kernel after building pppd 2.3.11.

Thanks, it worked just great. I spent several weeks a puzzling that one.
I would have asked here earlier if I had known I would have gotten a reply
of such good quality.

--
Frank Stutzman