Workaround for mpd5 and 8.0 broken proxy arp?

Ruslan Ermilov ru at freebsd.org
Wed Apr 14 13:00:16 UTC 2010


Hi Qing,

On Tue, Mar 30, 2010 at 06:25:48PM -0700, Li, Qing wrote:
> > Yes, it's still broken (it's a regression compared to 7.x).  A
> > workaround I've found working after analyzing the newer kernel
> > code is to ALWAYS use the same IP address for the local end of
> > the tunnel as of the corresponding ARP capable interface.
> > 
> 
>    Are you using VLANs?
> 
>    Were you getting the following error message?
>    "cannot intuit interface index and type for x.x.x.x"
> 
>    Could you please revert back to your original configuration
>    and give the following patch try (in addition to the patches
>    mentioned by Mike) ?
> 
>    http://people.freebsd.org/~qingli/mpd-patch.diff

Doesn't seem to have any effect.  Please see
http://lists.freebsd.org/pipermail/freebsd-net/2010-March/024728.html
on how to reproduce.

If you change the ifconfig command shown there so that the local end
of a P2P interface is assigned the same IP address 10.25.1.244 as of
vlan408, it will work as expected.


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer


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