Hallo Liste,
so, jetzt habe ich Eure Emfpehlungen ( danke !) umgesetzt. eth0 ist 
ausgeschaltet, bootet auch nicht mehr mit. Es hilft aber nicht weiter. - 
Mandrake 8.2 bietet unabh�ngig von eth0 zwei Wege an ins Netz zu kommen: 
isdn4linux und isdn-light. Ich habe beide probiert. Beide gehen nicht.
Kann Jemand von Euch die folgenden output-Meldungen interpretieren und 
daraus eine Handlungsempfehlung ableiten ?
 

[michael@koekdv michael]$ ifconfig
bash: ifconfig: command not found
[michael@koekdv michael]$ su
Password:
[root@koekdv michael]# ifconfig
ippp0     Protokoll:Punkt-zu-Punkt Verbindung
          UP PUNKTZUPUNKT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:14 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenl�nge:30
          RX bytes:322 (322.0 b)  TX bytes:192 (192.0 b)

lo        Protokoll:Lokale Schleife
          inet Adresse:127.0.0.1  Maske:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:161 errors:0 dropped:0 overruns:0 frame:0
          TX packets:161 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenl�nge:0
          RX bytes:12759 (12.4 Kb)  TX bytes:12759 (12.4 Kb)

     
[root@koekdv michael]# ps ax|grep ipppd
 2612 ?        S      0:00 ipppd /dev/ippp0 ipparam ippp0 noipdefault 
ipcp-accep
 3078 ?        S      0:00 ipppd /dev/ippp0 ipparam ippp0 noipdefault 
ipcp-accep
 3795 pts/2    S      0:00 grep ipppd

/etc/hosts lines
192.168.0.1             koekdv

[root@koekdv michael]# tail -f /var/log/messages
May 26 11:43:09 koekdv kernel: ippp0: remote hangup
May 26 11:43:09 koekdv kernel: ippp0: Chargesum is 0
May 26 11:43:09 koekdv ipppd[2612]: Modem hangup
May 26 11:43:09 koekdv ipppd[2612]: Connection terminated.
May 26 11:43:09 koekdv ipppd[2612]: taking down PHASE_DEAD link 0, 
linkunit: 0
May 26 11:43:09 koekdv ipppd[2612]: closing fd 19 from unit 0
May 26 11:43:09 koekdv ipppd[2612]: link 0 closed , linkunit: 0
May 26 11:43:09 koekdv ipppd[2612]: reinit_unit: 0
May 26 11:43:09 koekdv ipppd[2612]: Connect[0]: /dev/ippp0, fd: 19
Mai 26 11:43:20 koekdv su(pam_unix)[2658]: session opened for user root 
by (uid=501)
Mai 26 11:43:41 koekdv net_monitor.real[2526]: launched command: 
/etc/sysconfig/network-scripts/net_cnx_up &
May 26 11:43:41 koekdv kernel: isdn_net: interface ippp0 already exists
May 26 11:43:42 koekdv ipppd: info: no PAP secret entry for this user!
May 26 11:43:42 koekdv ipppd: info: no CHAP secret entry for this user!
May 26 11:43:42 koekdv ipppd[2780]: Found 1 device: /dev/ippp0
May 26 11:43:42 koekdv ipppd[2785]: ipppd i2.2.11 (isdn4linux version of 
pppd by MH) started

Mit isdn-light :

May 26 11:49:22 koekdv kernel: ippp0: dialing 0 0...
May 26 11:49:31 koekdv kernel: ippp0: dialing 0 1019...
May 26 11:49:40 koekdv kernel: ippp0: dialing 1 019231750...
May 26 11:49:41 koekdv ipppd[2612]: Local number: 06734, Remote number: 
0, Type: outgoing
May 26 11:49:41 koekdv ipppd[2612]: PHASE_WAIT -> PHASE_ESTABLISHED, 
ifunit: 0, linkunit: 0, fd: 19
May 26 11:49:41 koekdv kernel: isdn_net: ippp0 connected
May 26 11:49:42 koekdv kernel: ippp0: remote hangup
May 26 11:49:42 koekdv kernel: ippp0: Chargesum is 0
May 26 11:49:42 koekdv ipppd[2612]: Modem hangup
May 26 11:49:42 koekdv ipppd[2612]: Connection terminated.
May 26 11:49:42 koekdv ipppd[2612]: taking down PHASE_DEAD link 0, 
linkunit: 0
May 26 11:49:42 koekdv ipppd[2612]: closing fd 19 from unit 0
May 26 11:49:42 koekdv ipppd[2612]: link 0 closed , linkunit: 0
May 26 11:49:42 koekdv ipppd[2612]: reinit_unit: 0
May 26 11:49:42 koekdv ipppd[2612]: Connect[0]: /dev/ippp0, fd: 19
Mai 26 11:51:05 koekdv su(pam_unix)[3558]: session closed for user root

[root@koekdv michael]# isdnctrl list all

Current setup of interface 'ippp0':

EAZ/MSN:                06734
Phone number(s):
  Outgoing:             0 1019 019231750
  Incoming:
Dial mode:              auto
Secure:                 on
Callback:               off
Reject before Callback: on
Callback-delay:         5
Dialmax:                1
Hangup-Timeout:         180
Incoming-Hangup:        on
ChargeHangup:           off
Charge-Units:           0
Charge-Interval:        0
Layer-2-Protocol:       hdlc
Layer-3-Protocol:       trans
Encapsulation:          syncppp
Slave Interface:        None
Slave delay:            10
Slave trigger:          6000 cps
Master Interface:       None
Pre-Bound to:           Nothing
PPP-Bound to:           0



[root@koekdv michael]# ifup ippp0
Activating device: ifcfg-ippp0
Loading network settings: ifcfg-ippp0
Loading module(s) for ippp0
Adding ippp device ippp0
addif: No such device
Configuring device ippp0
EAZ/MSN for ippp0 is 06734
Security for ippp0 is on
Dialmax for ippp0 is 1 times.
Hangup-Timeout for ippp0 is 180 sec.
Incoming-Hangup for ippp0 is on
Charge-Hangup for ippp0 is off
Layer-2-Protocol for ippp0 is hdlc
Layer-3-Protocol for ippp0 is trans
Encapsulation for ippp0 is syncppp
Slave-activation delay for ippp0 is 10 sec.
ippp0 bound to 0
ISDN Configuration read from /etc/isdn/isdnctrl.conf.
Adding device ippp0
SIOCSIFDSTADDR: Die angeforderte Adresse kann nicht zugewiesen werden
Starting ppp-daemon if needed
Starting PPP-daemon for ippp0
In file /etc/ppp/ioptions: too few parameters for command name

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