On 18 Jun, Numan Siddique wrote:
> On Sat, Jun 13, 2020 at 2:53 PM Gabriele Cerami <gcer...@redhat.com> wrote:
> 
> > On 12 Jun, Gabriele Cerami wrote:
> > > +    /* RFC4191 section 2.2 */
> > > +    if (ntohs(ra->router_lifetime) == 0) {
> > > +        ra->mo_flags &= IPV6_ND_RA_OPT_PRF_RESET_MASK;
> > > +    }
> >
> > Sorry for the spamming, not having test coverage for this part is
> > proving challenging. I wonder if it's best to add an option for this too
> >
> 
> What do you mean by option ? You mean in the put_nd_ra_opts() ?

Yes, something similar to what I just added, since lifetime is part of
the header too.
If lifetime can be changed, I could add a test where I set it to 0 and
verify that router_preference is forced to 0 too.

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