Hi all, I'm working on my thesis and I need to create an ethernet virtual interface (I will not use it for packet transmission). Do you know how it's possible doing this ? I've tried with creating a function with these instructions ----- dev = alloc_etherdev(sizeof(struct net_device)); dev->open = do_up ; dev->stop = do_down ; dev->do_ioctl = the_ioctl ; dev->hard_start_xmit = transmit ; dev->set_multicast_list = mcast_list ; dev->change_mtu = ch_mtu ; dev->tx_timeout = transm_timeout ; dev->set_mac_address = set_MAC_virtual_interface; ----- every function doesn't contain any instruction, only "return 0" one. set_MAC_virtual_interface set a random MAC to the interface; after these instruction I register the interface. The module is loaded correctly but, when unloading, the "rollback_registered function is unable to handle NULL pointer", which is the needed pointer ? Can anyone tell me how is possible to create a virtual interface? Is there a manual/howto/article to help me ? Thank you in advance! -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html