[Info-vax] DECnet Phase IV broken after VSI update

[Craig A. Berry]

On 10/30/21 9:26 PM, Lawrence D’Oliveiro wrote:
> On Sunday, October 31, 2021 at 12:00:05 PM UTC+13, Craig A. Berry wrote:
>> In my case Kermit from a Linux system tunneled over SSH stopped working.
> 
> What sort of errors was it reporting?

None.  It just hung.  My best guess is the host was waiting for a reply
to the inquiry that it never got.

>> I had to exclude the account that was doing that from the check, which
>> is a pretty desperate hack. If there's a better way to identify
>> sessions that are using FTDRIVER and have a TT device with a device
>> class of 66 but are not actual interactive terminal sessions using SSH,
>> I'd be happy to hear what it is.
> 
> What is the need for FTDRIVER, exactly? 

No idea.

 > Isn’t there some standardpseudo-terminal facility equivalent to pty(7)

FTDRIVER is a pseudo-terminal driver.  There is also something called a
virtual terminal (VTDRIVER?) but I've never used it and couldn't find
much in the way of documentation just now.

As Hoff said else-thread:

"It'd be interesting to see if ssh could be adapted to permit VT virtual
terminal support, too."