ok, ifconfig -a gives me back:
lo0: FLAGS = 1000849 (up, loopback,running, multicast, ipv4) mtu 8232 index 1 inet 127.0.0.1 netmask ff000000
I cannot plumb any other interfaces 'cause i don't know what name should i use.
My hardware:
x86 family 6 Model 8 Stepping 6
AT/AT Compatibile
260 330 KB RAM
VGA: Intel Corporation 810 Graphics Controller Hub
NC: 3Com 3C920 Integrated Fast Ethernet ( 3C905C - TX Compatibile)