IPv6 works on em0 () but not on em1 () - what's wrong?,IPv6 works on em0 () but not on em1 () - what's wrong?

[Hiroki Sato]

Lev Serebryakov <lev at FreeBSD.org> wrote
  in <58756DDE.5000503 at FreeBSD.org>,<58756DDE.5000503 at FreeBSD.org>:

le>
le>  I have MoBo (Supermicro X9SCL-F) with two 1G NICs, first one (em0) is
le> based on 82579LM, and second one (em1) is based on 82574L.
le>
le>  When I'm using em0 with simple config:
le>
le> ifconfig_em0="inet 192.168.134.2 netmask 255.255.255.0 mtu 9000"
le> ifconfig_em0_ipv6="inet6 accept_rtadv"
le>
le>  everything works fine - em0 get IPv6 prefix from rtadvd of my router
le> and "tspdump -n -i em0 icmp6" shows some traffic, like router and prefix
le> announcements. So far so good.
le>
le>  I want to use em1 (and don't use em0 at all), because 82579LM has some
le> known bugs according to SuperMicro support and someties hangs whole system.
le>
le>   So, I change config to
le>
le> ifconfig_em1="inet 192.168.134.2 netmask 255.255.255.0 mtu 9000"
le> ifconfig_em1_ipv6="inet6 accept_rtadv"
le>
le>  connect em1 instead of em0 to the switch and reboot. And after that
le> interface (em1) can not get IPv6 prefix, don't get global address (and
le> shows only link-local one)and "tcpdump -n -i em1 icmp6" shows nothing at
le> all! IPv4 works fine, though.
le>
le>  What do I do wrong? Is it known issue of 82574L?
le>
le>  I'm running 10-STABLE r311462.

 What happens by typing the following command?

 % ping6 ff02::1%em1

-- Hiroki
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