port-sparc64/54034: Using "hme" driver with qemu-system-sparc64 results in hard-hang of guest

[thorpej%me.com@localhost]

>Number:         54034
>Category:       port-sparc64
>Synopsis:       Using "hme" driver with qemu-system-sparc64 results in hard-hang of guest
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 02 23:30:00 +0000 2019
>Originator:     Jason Thorpe
>Release:        NetBSD 8.99.34 / NetBSD 8.0
>Organization:
>Environment:
NetBSD sparc64-vm 8.99.34 NetBSD 8.99.34 (GENERIC) #0: Thu Feb 28 17:41:27 UTC 2019  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/sparc64/compile/GENERIC sparc64
>Description:
Under both NetBSD 8.0 and NetBSD 8.99.34, using the "hme" driver (which is the default Qemu network interface model) results in a hard hang of the guest.  Using the "ne2k_pci" interface type in Qemu works fine.

I don't know if this is a NetBSD bug or a Qemu bug.

>How-To-Repeat:
Use dhcpcd with the "hme" driver in a Qemu guest.
>Fix:
unknown.