On Wed, 14 Jun 2017 10:54:31 +0800
严海双 <yanhaishu...@cmss.chinamobile.com> wrote:


> > Changes since v2:
> >  * mask key->tos with RT_TOS() suggested by Daniel

Can you help me understand the rationale for this change? Is there are bug 
introduced by dsfield = ip6_tclass(key->label); ?

The RT_TOS masks out 4bits of the 8bit tos field in accordance with RFC1349 
(obsoleted by RFC2474). IPv6 does not have a TOS field. So it dosen't make 
sense to apply a TOS value to the outer header of an IPv6 tunnel.

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