Hello Yes, I confirm that the infos I gave are the right ones for kernel 2.6.8 . For no confusion (right english word ?) I join the 3 files : serial.opts, config and config.opts. I used these for he following tests. Curious behaviour of the modem card, in particular the Com One which should work according this website : http://tuxmobil.org/pcmcia_ci10478.html So, with these below details, I hope that it will help you to find the reason why the modem cards are so "hard" to work properly :-) Regards Pascal 1/ case of the Com Oen card MC227 (modem) So, before pluggin : - lsmod : ds 21128 4 yenta_socket 21248 0 pcmcia_core 66188 2 ds,yenta_socket And after pluggin : - dmesg : cs: memory probe 0xf8a00000-0xfd1ff000: excluding 0xf8a00000-0xfa4f3fff 0xfadf0000-0xfb26dfff 0xfb6ec000-0xfd65dfff - more /var/log/messages under root login : Nov 22 21:37:13 snidre kernel: cs: memory probe 0xf8a00000-0xfd1ff000: excluding 0xf8a00000-0xfa4f3fff 0xfadf0000-0xfb26dfff 0xfb6ec000-0xfd65dfff Nov 22 21:37:13 snidre cardmgr[2816]: socket 0: Serial or Modem - lsmod : serial_cs 11176 1 ds 21128 5 serial_cs yenta_socket 21248 1 pcmcia_core 66188 3 serial_cs,ds,yenta_socket - ls -al /dev/mod* : lrwxrwxrwx 1 root root 9 Nov 22 21:37 /dev/modem -> /dev/cua4 2/ case of the Hayes Optima288 card (modem) : - more /var/log/messages under root login (not enough data with only dmesg) : Nov 22 21:44:28 snidre cardmgr[2816]: socket 0: Hayes Optima 288 Nov 22 21:44:29 snidre kernel: ttyS5 at I/O 0xd000 (irq = 9) is a 16450 - lsmod : serial_cs 11176 1 ds 21128 5 serial_cs yenta_socket 21248 1 pcmcia_core 66188 3 serial_cs,ds,yenta_socket - ls -al /dev/mod* : lrwxrwxrwx 1 root root 9 Nov 22 21:44 /dev/modem -> /dev/cua5 3/ case of the ethernet NetGear FA411 card : - more /var/log/messages under root login : Nov 22 22:07:38 snidre cardmgr[2816]: socket 0: NetGear FA411 Fast Ethernet Nov 22 22:07:38 snidre kernel: eth1: NE2000 Compatible: io 0xd000, irq 9, hw_addr 00:40:F4:44:19:A2 Nov 22 22:07:38 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=0000:0000:0000:0000:0000:0000:0000:0000 DST=ff02:0000:0000:0000:0000:00 01:ff44:19a2 LEN=72 TC=0 HOPLIMIT=1 FLOWLBL=0 OPT ( ) PROTO=ICMPv6 TYPE=131 CODE=0 Nov 22 22:07:38 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:39 snidre SuSEfirewall2: Firewall rules successfully set in QUICKMODE for device(s) " ppp+" plus masquerading Nov 22 22:07:39 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=0000:0000:0000:0000:0000:0000:0000:0000 DST=ff02:0000:0000:0000:0000:00 01:ff44:19a2 LEN=64 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=135 CODE=0 Nov 22 22:07:39 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:40 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=fe80:0000:0000:0000:0240:f4ff:fe44:19a2 DST=ff02:0000:0000:0000:0000:00 00:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0 Nov 22 22:07:40 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:44 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=fe80:0000:0000:0000:0240:f4ff:fe44:19a2 DST=ff02:0000:0000:0000:0000:00 00:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0 Nov 22 22:07:44 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:45 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=fe80:0000:0000:0000:0240:f4ff:fe44:19a2 DST=ff02:0000:0000:0000:0000:00 01:ff44:19a2 LEN=72 TC=0 HOPLIMIT=1 FLOWLBL=0 OPT ( ) PROTO=ICMPv6 TYPE=131 CODE=0 Nov 22 22:07:45 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:48 snidre kernel: SFW2-OUT-IPv6_PROHIB IN= OUT=eth1 SRC=fe80:0000:0000:0000:0240:f4ff:fe44:19a2 DST=ff02:0000:0000:0000:0000:00 00:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0 Nov 22 22:07:48 snidre kernel: REJECTv6: case 2 not handled yet Nov 22 22:07:49 snidre kernel: eth1: no IPv6 routers present - lsmod : pcnet_cs 20152 1 8390 10752 1 pcnet_cs ds 21128 5 pcnet_cs yenta_socket 21248 1 pcmcia_core 66188 3 pcnet_cs,ds,yenta_socket