[radvd-devel-l] Changing MTU with radvd (AdvLinkMTU in radvd.conf)

[David Shwatrz]

Jim,
Thanks.
I am running 2.6.21 kernel.

However, as I discovered now after Pekka Savola answer,
 cat /proc/sys/net/ipv6/conf/eth0/mtu gives the MTU which I set in the
/etc/radvd.conf,
as expected.

So I am not sure that the patch is relevant here.

Regards,
DS





On Mon, Mar 31, 2008 at 11:15 AM, Jim Paris <jim at jtan.com> wrote:
> David Shwatrz wrote:
>  > Any idea why the MTU was not changed from 1500 to 1495 on that host?
>
>
> Pekka Savola wrote:
>  > However, if you did tcpdumps of traffic, you should see that v6 connections
>  > use the lower MTU.  Otherwise the client OS MTU calculation has a bug.
>
>  Hi,
>
>  Linux kernel 2.6.24 and earlier have a bug.  I provided a patch here:
>    http://www.mail-archive.com/netdev@vger.kernel.org/msg59682.html
>  and I believe it was applied in 2.6.25-rc1.
>
>  -jim
>
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