Dear all, we are running on an x86 system SLES 9 where we added an Intel Pro/1000 Ethernet MT Quad adapter. The system recognized this board and with YAST we configured for examples two interfaces ie. "ifconfig -a" is showing the correct properties. But we are not able from other sytems in the same subnet to communicate (ping) with their respective Ethernet ports. Firewall is not active i.e. "iptables -L" says: Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Also pls. see our "ifconfig -a" ouput for the configured eth2/eth3 ports: eth2 Link encap:Ethernet HWaddr 00:04:23:09:C9:55 inet addr:149.243.228.79 Bcast:149.243.228.255 Mask:255.255.255.0 inet6 addr: fe80::204:23ff:fe09:c955/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Base address:0xc400 Memory:fc000000-fc020000 eth3 Link encap:Ethernet HWaddr 00:04:23:09:C9:56 inet addr:149.243.226.60 Bcast:149.243.226.255 Mask:255.255.255.0 inet6 addr: fe80::204:23ff:fe09:c956/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:105 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:11516 (11.2 Kb) TX bytes:292 (292.0 b) Base address:0xc000 Memory:fb800000-fb820000 Our idea is that this behavior has something to do with "acpi" but using the "acpi=oldboot" value (menu.lst) didn't the trick. Any tipps, comments are welcome! Many thanks in advance! Rainer