Workaround for mpd5 and 8.0 broken proxy arp?

[Ruslan Ermilov]

On Tue, Mar 30, 2010 at 05:20:52PM -0400, Mike Tancsa wrote:
> At 03:08 PM 3/30/2010, J. English wrote:
> >In googling for solutions, I came across others who have posted to this list
> >who have had similar problems.  It also looks like a problem report has been
> >submitted for proxy arp being broken in 8.0 RELENG.
> 
> >My options are 1) to wait until proxy arp is fixed (don't know how long that
> >will take),
> 
> Are you sure its still broken in RELENG_8 ? There were a couple of 
> fixes since 8.0 that have gone into the tree if I recall correctly.
> 
> http://svn.freebsd.org/viewvc/base?view=revision&revision=201614
> 
> http://lists.freebsd.org/pipermail/svn-src-stable-8/2010-March/001790.html

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.


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