On 30-11-2014 06:21, Herbert Xu wrote:

On Sat, Nov 29, 2014 at 03:08:09AM -0200, Marcelo Ricardo Leitner wrote:

quoted

On 28-11-2014 21:59, Herbert Xu wrote:

quoted

On Fri, Nov 28, 2014 at 05:25:27PM -0200, Marcelo Ricardo Leitner wrote:

quoted

I saw there are tun updates on Dave's queue but none seemed to handle this.

I can't use current net-next
(799d2fff1858004526ad75d66a5dd8a5cce6ad40) on a kvm hypervisor
because tun got clogged somehow. Bisected down to:

commit e0b46d0ee9c240c7430a47e9b0365674d4a04522
Author: Herbert Xu [off-list ref]
Date:   Fri Nov 7 21:22:23 2014 +0800

Does this patch help?

Yay, it does! Works for me, thanks Herbert.
I didn't test performance, but dhcp could get through.

Are you sure about the Fixes tag? Because bisect really pointed to e0b46d0ee9c.

Well according to your report you were having problems with
tun_get_user.  The bug I introduced was in tun_put_user and has
already been fixed by Jason Wang.

Ahh yes, ok. Thanks

Cheers,
Marcelo