Subject: port-hp300/501: IP multicast support on hp300 broken
To: None <>
From: Havard Eidnes <>
List: netbsd-bugs
Date: 09/28/1994 16:50:03
>Number:         501
>Category:       port-hp300
>Synopsis:       IP multicast reception on hp300 port doesn't work properly
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 28 16:50:02 1994
>Originator:     Havard Eidnes
System: NetBSD 1.0_BETA NetBSD 1.0_BETA (LIRYPE) #1: Tue Sep 27 17:13:20 MET 1994 hp300

	It appears that IP multiast reception on the hp300 platform doesn't
	work.  I have recently compiled up a version of "imm", and it doesn't
	receive any multicast packets where my i486 box running NetBSD does
	receive them.

	However, if I run tcpdump on the hp300 box, the application does
	receive the multicast packets.  I conclude that there must be some
	bug in the ethernet driver which prevents the IP multicast packets
	from being received.  (I suppose the IP multicast modifications
	have been performed on the ethernet driver...)

	Run imm and see that no packets are being received unless tcpdump
	is being run on the same host.
	Unknown at this point. From browsing the code it would seem that
	this was supposed to work...