[pptp-server] 619 Error, problem with pppd

[Charlie Brady]

On Mon, 28 Jan 2002, Vodo Baas wrote:

> I am running PoPToP version version 1.0.1 as a server and when I try to 
> connect with a Win 2000 computer I get a 619 error stating that the port is 
> not connected.  When I check the log I see this:
> 
> pptpd[2370]: MGR: Manager process started
> pptpd[2379]: CTRL: Client 12.147.193.69 control connection started
> pptpd[2379]: CTRL: Starting call (launching pppd, opening GRE)
> pppd[2380]: pppd 2.4.0 started by root, uid 0
> pppd[2380]: Couldn't set tty to PPP discipline: Invalid argument
> pppd[2380]: Exit.
> pptpd[2379]: GRE: read(fd=5,buffer=804da20,len=8196) from PTY failed: status 
> = -1 error = Input/output error
> pptpd[2379]: CTRL: PTY read or GRE write failed (pty,gre)=(5,6)
> pptpd[2379]: CTRL: Client 12.147.193.69 control connection finished
> 
> If I am reading this right, the call that pptpd uses to call pppd is 
> incorrect and causing my connections to fail.

No. pppd is starting up, but then when it asks the kernel to enable PPP 
line discipline on its pseudoterminal connection, the kernel doesn't like 
a parameter being passed. I don't know enough about pppd and kernel 
internals to know why that is.

> Here is the version information for what I am using:
> Red Hat Linux 7.1
> Linux Kernel 2.4.17 (From kernel.org)
> PoPToP 1.0.1
> ppp 2.4.0
> 
> I noticed that in the mailing list the version of ppp that most peopl use is 
> 2.3.8 through 2.3.11 is there a compatibility issue with 2.4.0?

No. We've been using 2.4.0 in our product for ages (with 2.2.x kernels).

I'd recommend:

- using a RedHat standard kernel, and only build new ppp.o and mppe.o 
  modules.
- using PoPToP 1.1.2

--
Charlie Brady                         charlieb at e-smith.com
Lead Product Developer
Network Server Solutions Group        http://www.e-smith.com/
Mitel Networks Corporation            http://www.mitel.com/
Phone: +1 (613) 368 4376 or 564 8000  Fax: +1 (613) 564 7739