Messages in this thread | | | Date | Mon, 13 Sep 2004 01:17:31 +0200 | From | Aurélien GÉRÔME <> | Subject | Re: iMac G3 IPv6 issue |
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On Sun, Sep 12, 2004 at 03:58:50PM -0700, David S. Miller wrote: > On Sun, 12 Sep 2004 18:57:31 +0100 > David Woodhouse <dwmw2@infradead.org> wrote: > > > On Sun, 2004-09-12 at 15:39 +0200, Aurélien GÃRÃME wrote: > > > I put IPv6 support, but the console is flooded by a lot of: > > > hw tcp v6 csum failed > > > However, IPv6 works, and IPv4 packets do not have this kind of issue. > > > The network card is a Sun Gem. It is kind of weird to see bad packets. > > > > I use the sungem in a similar machine with IPv6, and haven't seen any > > problems. Can you tcpdump from a different machine on the network and > > confirm whether these reported bad checksums really are happening or if > > it's the fault of the hardware/driver? > > One thing that's interesting is that the sungem and sunhme > drivers are the only two in the whole tree that support > IPV6 checksum offload. Like David, I have never seen this > problem on Sparc systems using the GEM chip and this > driver.
The board is this: 0002:02:0f.0 Ethernet controller: Apple Computer Inc. UniNorth GMAC (Sun GEM)
So, it is Apple stuff wrapping a Sun GEM chip. The issue may come from that. Anyway, I am going to dig in the source code to find out.
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