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Re: mac80211 IPv6 problems

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On Thu, 2007-08-02 at 18:30 -0400, Daniel Drake wrote:
> This may be a stack-level issue. This is one of the issues holding back 
> zd1211rw-mac80211 going into mainline: we have a report that 
> zd1211rw-softmac works fine with IPv6 but mac80211 only works 
> occasionally with the same device on the same system.
> 
> Does anyone have any ideas?

It receives its own neighbour solicitation (multicast) packets when the
AP sends them back out again. These packets...

23:41:56.046939 00:0a:95:f3:99:92 > 33:33:ff:f3:99:92, ethertype IPv6
(0x86dd), length 78: :: > ff02::1:fff3:9992: ICMP6, neighbor
solicitation, who has fe80::20a:95ff:fef3:9992, length 24

You should be able to see this without _any_ IPv6 infrastructure -- and
you'll see the link-local IPv6 address remains 'tentative'.

Once you've fixed that, setting up a local route advertisement dæmon
(radvd) to give you site-local addresses is fairly trivial too -- and
then you can also check that Ethernet multicast is working properly.

-- 
dwmw2

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