On Sun, 2020-08-02 at 22:44 +0200, Thorsten Glaser wrote:
> On Sun, 2 Aug 2020, Ben Hutchings wrote:
> 
> > The RFC says that the IPV6_TCLASS option's value is an int, and that
> 
> for setsockopt (“option's”), not cmsg
> 
> > No, the wording is *not* clear.
> 
> Agreed.
> 
> So perhaps let’s try to find out what’s actually right…

For what it's worth, FreeBSD/Darwin and Windows also put 4 bytes of
data in a IPV6_TCLASS cmsg.  So whether or not it's "right", it's
consistent between three independent implementations.

Ben.

-- 
Ben Hutchings
For every complex problem
there is a solution that is simple, neat, and wrong.