Re: Bug? ISDN stops working with 2.2.5ac2

Paul Slootman (
Tue, 6 Apr 1999 17:08:22 +0200

In article <> you write:
>This has been bugging me for a couple of days and as I can't figure it
>out myself and post a patch, I ask for your help.
>Something between 2.2.5 and 2.2.5ac2 stops ISDN syncPPP connections from
>working correctly.

FWIW, I have no problems with 2.2.5ac3 whatsoever. Then again, I always
plug in the CVS version of isdn4linux as the 2.2 stuff is still old.

>reasons) where everything works as expected:


>Apr 6 08:33:32 morphy ipppd[193]: MPPP negotiation, He: No We: No
>Apr 6 08:33:32 morphy ipppd[193]: local IP address XXX.XXX.XXX.XXX
>Apr 6 08:33:32 morphy ipppd[193]: remote IP address XXX.XXX.XXX.XXX
>Apr 6 08:33:32 morphy ipppd[193]: Unsupported protocol 'Compression
>Control Protocol' (0x80fd) received

>And here's a transcript of a failed session with 2.2.5ac2 and the same
>Apr 4 18:13:44 morphy ipppd[2727]: MPPP negotiation, He: No We: No
>Apr 4 18:13:44 morphy ipppd[2727]: CCP enabled! Trying CCP.
>Apr 4 18:13:44 morphy ipppd[2727]: CCP: got ccp-unit 0 for link 0
>(protocol: 0x80fd)
>Apr 4 18:13:44 morphy ipppd[2727]: ccp_resetci!
>Apr 4 18:13:44 morphy ipppd[2727]: Kernel check for LZS failed
>Apr 4 18:13:44 morphy ipppd[2727]: local IP address XXX.XXX.XXX.XXX
>Apr 4 18:13:44 morphy ipppd[2727]: remote IP address XXX.XXX.XXX.XXX

Are you sure you're using the same ipppd in both cases? They look

>Even if I run "ifconfig ippp0 up" and set up the routes manually, no

Also after the connection is made? Having 'defaultroute' as ipppd option
can do strange and wonderful things to your routing...


You also show 'noccp' as option, but ipppd said "CCP enabled!" ...

>The only thing changing between the tests is the kernel version. The

Very sure?

Paul Slootman

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