Erlang, port_control, linked-in driver and badarg

port_control function may return badarg if control function (implemented in linked-in driver) returns value which not equals number of bytes filled in rbuf.

How to connect to erlang node on remote machine

I'm very new in Erlang node and just studing it.
I have some trouble with connecting Erlang nodes on remote machine. And I found following solution:
Erlang (or erlang shell) should be started with same cookie on remote machines, i.e.:

erl -name node1 -setcookie my-cookie
erl -name node2 -setcookie my-cookie