How2 kill pppd without pulling-plug?

From	Avoid9Pdf@gmail.com
Newsgroups	comp.protocols.ppp, comp.os.linux.networking
Subject	How2 kill pppd without pulling-plug?
Date	2012-07-11 19:20 +0000
Organization	A noiseless patient Spider
Message-ID	<jtkjla$mch$1@dont-email.me> (permalink)

Cross-posted to 2 groups.

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I remember reading how some Soviet-scammers, made people's modems
auto-dial Moldovia, and the expensive call costs went partly to the scammers.

Since then I just pull the plug.
And I've got the POTS-dial-up modem set to *sound*.

Now this fixed-radio-terminal-modem which goes via ttyUSB0, can't
re-connect after I disconnect-the-USBline, until I reboot.

It was previously OK, under Slak13, until that crashed the IDE and
I've been using old-FC1.

There's a kernel problem and apparently a mem-leak, because
it  slowly <disconnects pid/S after I've pulled-the-line>.

Here's `tail /var/log/messages` :-
Jul 11 19:08:50 localhost pppd[28712]: secondary DNS address 41.164.0.11 <-last good line
Jul 11 19:23:57 localhost kernel: usb.c: USB disconnect on device 00:0f.0-1 address 4
Jul 11 19:23:57 localhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000998
Jul 11 19:23:57 localhost kernel:  printing eip:
Jul 11 19:23:57 localhost kernel: caef656c
Jul 11 19:23:57 localhost kernel: *pde = 00000000
Jul 11 19:23:57 localhost kernel: Oops: 0002
Jul 11 19:23:57 localhost kernel: ppp_deflate ppp_async ppp_generic slhc usbserial vfat fat soundcore r128 agpgart reiserfs parport_pc lp parport autofs ipt_REJECT ipt_state ip_conntrack iptab
Jul 11 19:23:57 localhost kernel: CPU:    0
...
Jul 11 19:23:57 localhost kernel: [<c8a095c0>] usb_hub_thread [usbcore] 0x0 (0xc60b3fe0)
Jul 11 19:23:57 localhost kernel: [<c010741d>] kernel_thread_helper [kernel] 0x5 (0xc60b3ff0)
Jul 11 19:23:57 localhost kernel: 
Jul 11 19:23:57 localhost kernel: 
Jul 11 19:23:57 localhost kernel: Code: 89 90 98 09 00 00 8d 4e 58 ff 43 74 0f 8e 96 05 ...

Also why can't I
`kill -9 <pppd-pid>` ?

If I leave the USB-line connected it goes on-line by itself, every few minutes.
What the hell is that?!

== TIA.

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How2 kill pppd without pulling-plug? Avoid9Pdf@gmail.com - 2012-07-11 19:20 +0000
  Re: How2 kill pppd without pulling-plug? James Carlson <carlsonj@workingcode.com> - 2012-07-17 07:45 -0400
    Re: How2 kill pppd without pulling-plug? Avoid9Pdf@gmail.com - 2012-07-19 12:16 +0000
      Re: How2 kill pppd without pulling-plug? J G Miller <miller@yoyo.ORG> - 2012-07-19 12:27 +0000

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