Date: Thu, 24 Sep 2009 14:31:15 -0400 From: Jeff Blank <jfb@mr-happy.com> To: freebsd-current@freebsd.org Subject: [8.0-RC1] IPv6 multicast not received when ale0 not promiscuous Message-ID: <20090924183115.GA79542@mr-happy.com>
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Hi,
I have an 8.0-RC1 amd64 system that cannot receive IPv6 multicast
traffic when ale0 (onboard and only NIC) is not in promiscuous mode.
When I run 'tcpdump icmp6' on the host, I see multicast neighbour
advertisements and router advertisements, and I can solicit a router
advertisement as well. When tcpdump is not running or is running with
-p, no default route is learned, and with 'tcpdump -p', the RA and NA
packets aren't even captured. I do see the outgoing solicitations and
unicast NS/NA.
I noticed this problem under 8.0-BETA4 (20090915) when I started
running v6 again after a few months of not doing so (first try on this
box, though), and it has continued in RC1 (csup RELENG_8 just a couple
hours ago). Other v6-enabled hosts on the network have no problems,
including an OpenSolaris box that used to run 7-STABLE with sk(4) and
nfe(4) (one at a time), no problems with either OS or interface, and
an 8.0-BETA4 (20090915) i386 VirtualBox with an emulated em(4)
interface (82540EM) on the above OpenSolaris host.
Does this ring a bell with anyone? Anything I should look for or try
before submitting a PR?
thanks,
Jeff
ale0@pci0:2:0:0: class=0x020000 card=0x831c1043 chip=0x10261969
rev=0xb0 hdr=0x00
vendor = 'Attansic (Now owned by Atheros)'
device = 'PCI-E ETHERNET CONTROLLER (AR8121/AR8113 )'
class = network
subclass = ethernet
# ifconfig ale0
ale0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=319a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MCAST,WOL_MAGIC>
ether 00:26:18:82:fc:65
inet6 fe80::226:18ff:fe82:fc65%ale0 prefixlen 64 scopeid 0x1
inet6 2001:5c0:1104:7a00::1:1 prefixlen 64
inet 172.19.3.81 netmask 0xffffff00 broadcast 172.19.3.255
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
# egrep 'ale|v6' /etc/rc.conf
ifconfig_ale0=DHCP
ipv6_enable=YES
ipv6_ifconfig_ale0="2001:5c0:1104:7a00::1:1 prefixlen 64"
ipv6_default_interface=ale0
# netstat -rnf inet6
Routing tables
Internet6:
Destination Gateway Flags Netif Expire
::/96 ::1 UGRS lo0
::1 ::1 UH lo0
::ffff:0.0.0.0/96 ::1 UGRS lo0
2001:5c0:1104:7a00::/64 link#1 U ale0
2001:5c0:1104:7a00::1:1 link#1 UHS lo0
fe80::/10 ::1 UGRS lo0
fe80::%ale0/64 link#1 U ale0
fe80::226:18ff:fe82:fc65%ale0 link#1 UHS lo0
fe80::%lo0/64 link#4 U lo0
fe80::1%lo0 link#4 UHS lo0
fe80::%tun0/64 link#5 U tun0
fe80::226:18ff:fe82:fc65%tun0 link#5 UHS lo0
ff01:1::/32 fe80::226:18ff:fe82:fc65%ale0 U ale0
ff01:4::/32 ::1 U lo0
ff01:5::/32 fe80::226:18ff:fe82:fc65%tun0 U tun0
ff02::%ale0/32 fe80::226:18ff:fe82:fc65%ale0 U ale0
ff02::%lo0/32 ::1 U lo0
ff02::%tun0/32 fe80::226:18ff:fe82:fc65%tun0 U tun0
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