kern/60419: dse driver seems to cause ZuluSCSI PicoW based device to lock up network traffic

["brandon%burn.net@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60419
>Category:       kern
>Synopsis:       dse driver seems to cause ZuluSCSI PicoW based device to lock up network traffic
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jul 06 18:35:00 +0000 2026
>Originator:     Brandon Applegate
>Release:        11.0_RC5
>Organization:
>Environment:
NetBSD se30.internal.burn.net 11.0_RC5 NetBSD 11.0_RC5 (GENERICSBC) #0: Tue Jun 24 08:12:41 UTC 2026  builder%daily.NetBSD.org@localhost:/usr/src/sys/arch/mac68k/compile/GENERICSBC mac68k
>Description:
I have a ZuluSCSI pico slim.  It has the latest release firmware on it.  It is connected to my Mac SE/30.  WPA PSK auth, nothing fancy.

In MacOS 7.5.5 - OpenTransport seems to work fine.

In NetBSD 11.0_RC5 - the interface seems to work after a fresh boot - but after a short time (30 min ?) - it's dead.  No dmesg errors, etc.  Just no packets transferred (tcpdump is silent as well).

After this happened, the ZuluSCSI needed a cold start because warm rebooting into MacOS seems to have had the problem persisted.  I did a power off and cold boot and was back online in MacOS.

I don't have any debug on the ZuluSCSI right now, and there are no errors or messages in zululog.txt.

Let me know if there is some other debug info I can get you.
>How-To-Repeat:
Connect ZS PS to Mac SE 30 with wifi configured.  Configure rc.conf / dhcpcd etc to use dse0
>Fix: