problem installing slip

[sten at enea.UUCP]

I have some problems when setting up a slip communication between 'enea' (a
VAX780 running 4.2) and 'lavinia' (a uVAX II running Ultrix-32m 1.1).

After setting the slip daemons up, I have tried

1) 'rlogin enea' at 'lavinia'

  On my tty I immediately receive:

    enea: Address family not supported by protocol family

  On the console, the following line is printed:

    sl0: af1 not supported

  No printout occurs at 'enea'

2) 'rlogin lavinia' at 'enea'

  After a couple seconds of silence, I receive

    lavinia: Connection timed out

Any help will be appreciated!