To remove a communication protocol from a board and driver, you can use the UNBIND console command. If you have loaded the driver more than once, specify the board you want to unbind. See UNBIND in Utilities Reference.
When the protocol is unbound, users attached to the cabling scheme of the board can't log in. If users are already logged in, they receive a message when they attempt to access the server.
To unload a LAN driver, use the UNLOAD command or NWCONFIG. See NWCONFIGUNLOAD in Utilities Reference.