>Number:         18068
>Category:       kern
>Synopsis:       something is broken wrt sip* multicast
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Aug 25 16:00:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Jun-ichiro itojun Hagino
>Release:        NetBSD 1.6F
>Organization:
	itojun.org
>Environment:
System: NetBSD starfruit.itojun.org 1.6F NetBSD 1.6F (STARFRUIT) #194: Wed Aug 21 13:17:41 JST 2002 itojun@starfruit.itojun.org:/usr/home/itojun/NetBSD/src/sys/arch/i386/compile/STARFRUIT i386
Architecture: i386
Machine: i386
>Description:
	it looks that something is broken in sip*/pci interface wrt multicast.
	yet to find out workarounds.
>How-To-Repeat:
	the following illustrates an example where sip* interface fails to
	probe its neighbor.  maybe it is IPv6 problem, but i suspect it is
	sip* problem as i see the symptom only with sip*.

nd6_storelladdr: sdl_alen == 0, dst=2001:0240:0501:0001:0202:2dff:fe0f:f845, if=sip2

peppermint# ifconfig sip2
sip2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	address: 00:00:24:c0:55:de
	media: Ethernet autoselect (100baseTX full-duplex)
	status: active
	inet 219.101.47.129 netmask 0xfffffff8 broadcast 219.101.47.135
	inet6 fe80::200:24ff:fec0:55de%sip2 prefixlen 64 scopeid 0x3
	inet6 2001:240:501:1:200:24ff:fec0:55de prefixlen 64
	inet6 3ffe:501:410:0:200:24ff:fec0:55de prefixlen 64
	inet6 2001:240:501:1:: prefixlen 64 anycast
	inet6 3ffe:501:410:: prefixlen 64 anycast
peppermint# ping6 -n 2001:240:501:1:202:2dff:fe0f:f845 
PING6(56=40+8+8 bytes) 2001:240:501:1:200:24ff:fec0:55de --> 2001:240:501:1:202:2dff:fe0f:f845
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=12 hlim=64 time=3.601 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=13 hlim=64 time=3.324 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=14 hlim=64 time=3.287 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=15 hlim=64 time=3.283 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=16 hlim=64 time=3.169 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=17 hlim=64 time=3.256 ms
16 bytes from 2001:240:501:1:202:2dff:fe0f:f845, icmp_seq=19 hlim=64 time=3.157 ms

>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: