Subject: Re: dip
To: John Wright <esvwh@csv.warwick.ac.uk>
From: Alexander Hayward <alexander.hayward@lady-margaret-hall.oxford.ac.uk>
List: port-arm32
Date: 12/09/1996 23:08:25 
On Mon, 9 Dec 1996, John Wright wrote:
> I can't hangup and I've resorted to switching the modem off. My method
> of hanging up would have been to run dip -t then type port tty00
> and then reset.

Try dip -k
This should kill off the relevant process and disconnect you.