kern/56699: Cabletron EA419 SCSI to Ethernet adapter can't successfully download files during installation

[dross%pobox.com@localhost]

>Number:         56699
>Category:       kern
>Synopsis:       Cabletron EA419 SCSI to Ethernet adapter can't successfully download files during installation
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 07 19:25:00 +0000 2022
>Originator:     David Ross
>Release:        9.2
>Organization:
>Environment:
Available upon request
>Description:
I acquired a Cabletron EA419 SCSI to Ethernet adapter and was able to get it to connect to the network during netbsd installation on my Atari TT030.  I can ping 1.1.1.1 and at least connect to servers via FTP.  However when I attempt to actually pull down sets during an install, either via HTTP or FTP, it's unsuccessful.  Sysinst hangs, though it's not a full kernel panic.
>How-To-Repeat:
1.  Connect a Cabletron EA419 to your SCSI bus, making sure to configure termination properly.
2.  Try to install NetBSD 9.2 via HTTP or FTP.
Observe the system hangs when sets start to download.
This occurs on my Atari TT030 system, and I suspect it will also be the case on other systems where the EA419 is used.
>Fix: