Mailinglist Archive: opensuse (4348 mails)

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Setting up a simple PPP server
  • From: Jeff Hoare <jhoare@xxxxxxxxxx>
  • Date: Thu, 3 Oct 2002 13:12:40 +1000
  • Message-id: <200210031312.40266.jhoare@xxxxxxxxxx>
I am trying to setup a simple dial-in PPP server. I have followed the various
HOW-TOS and have managed to get the server working at least when I dial in
from a Windows machine. When I try to connect from my linux machine using
KPPP I get the error below in the system log during the logon process, and
the connection is terminated.

>Oct 2 15:56:18 Robin pppd[814]: Connect: ppp0 <--> /dev/ttyS1
>Oct 2 15:56:18 Robin pppd[814]: sent [LCP ConfReq id=0x1 <asyncmap 0x0>
<magic 0x9c1c767d> <pcomp> <accomp>]
>Robin last message repeated 9 times
>Oct 2 15:56:48 Robin pppd[814]: Terminating on signal 15.
>Oct 2 15:56:48 Robin pppd[814]: sent [LCP TermReq id=0x2 "User request"]
>Oct 2 15:56:51 Robin pppd[814]: sent [LCP TermReq id=0x3 "User request"]
Connection terminated.
>Oct 2 15:56:54 Robin pppd[814]: Receive serial link is not 8-bit clean:
Oct 2 15:56:54 Robin pppd[814]: Problem: all had bit 7 set to 0
Oct 2 15:56:54 Robin pppd[814]: Exit.

I can get the link to work (sorta) with wvdial, but after a short while the
whole system crashes, with the following errors. The remote server crashes as

>Oct 2 15:59:46 Robin pppd[834]: sent [LCP EchoReq id=0x1 magic=0xaee03118]
>Oct 2 15:59:47 Robin pppd[834]: rcvd [LCP EchoRep id=0x1 magic=0x682e4a49]
>Oct 2 16:00:00 Robin kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000018
>Oct 2 16:00:00 Robin kernel: printing eip:
>Oct 2 16:00:00 Robin kernel: c01373c6
>Oct 2 16:00:00 Robin kernel: *pde = 00000000
>Oct 2 16:00:00 Robin kernel: Oops: 0002
>Oct 2 16:00:00 Robin kernel: CPU: 0
>Oct 2 16:00:00 Robin kernel: EIP: 0010:[pipe_release+34/136] Not
>Oct 2 16:00:00 Robin kernel: EFLAGS: 00010246
>Oct 2 16:00:00 Robin kernel: eax: 00000000 ebx: 00000001 ecx: caa5de4c
edx: 00000000
>Oct 2 16:00:00 Robin kernel: esi: caa5dde0 edi: c13c4260 ebp: caa313e0
esp: caceff3c
>Oct 2 16:00:00 Robin kernel: ds: 0018 es: 0018 ss: 0018
>Oct 2 16:00:00 Robin kernel: Process sh (pid: 866, stackpage=cacef000)
>Oct 2 16:00:00 Robin kernel: Stack: c9021640 caa5dde0 c013744e caa5dde0
00000000 00000001 c012fe6e caa5dde0

Does anyone have any ideas as to what the problem might be. I wondered if its
possible that the modem is echoing the characters back, but I really don't
know anything about modems.

I'm using mgetty to answer the line, and have followed the HOW-TOS for
setting up the modem, configuring a dial in PPP server PPP HOW-TO), as well
as the config stuff for mgetty.

Regards Jeff

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