Bin Zhang wrote:
> Hi,
>
> I am running tahi interoperability test 1.2.B (host), using the vel
> 4.0.0 tool. The TAR and REF machines are both FreeBSD 7.1, and LOGO
> machine is our device.
>
> I have a question about FreeBSD 7.1 doing Duplicate Address Detection
> (DAD).
>
> In the first half of the test, TAR detects there is a duplicated Link
> Local Address (LLA) by doing DAD when the interface comes up, (the LLA
> was manually configured on our device according to the vel tool's
> instruction), after detecting the duplicate address, FreeBSD disables
> IPv6 on that interface, and I see the following message in dmesg:
>
> em1: DAD detected duplicate IPv6 address fe80:4::217:a4ff:fe51:fb0d:
> NS in/out=0/3, NA in=1
> em1: DAD complete for fe80:4::217:a4ff:fe51:fb0d - duplicate found
> em1: manual intervention required
> em1: possible hardware address duplication detected, disable IPv6
>
> After this, however, I can not get the IPv6 to be enabled back again,
> ifconfig down/up (as the vel tool does) does not work, and all the
> IPv6 traffic in the second half of the 1.2.B test is not being
> generated/processed on that interface anymore. I tried to restart the
> network by doing "/etc/rc.d/netif restart && sleep 30 &&
> /etc/rc.d/routing restart", it doesn't work either, the only thing I
> can do is to reboot the box, but that forces the test script to lost
> the connection, so the second half won't run.
>
> Could you give me any help on this issue?
>
> Thanks a lot!
> Bin
Hi, Bin:
did you use FreeBSD7.0 to try?
I think FreeBSD and NetBSD both need very old Network Card to test.
I hope these can give you some idea.
thanks
jiabo