Re: kern/51467 detaching USB network interface panics

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Mon, Nov 28, 2016 at 7:10 PM, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
> On Mon, Nov 28, 2016 at 06:12:58PM +0900, Ryota Ozaki wrote:
>> On Sun, Nov 27, 2016 at 6:50 PM, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
>> >  nd6_purge() contains a hack:
>> >
>> >                          /*
>> >                           * Because if_detach() does *not* release prefixes
>> >                           * while purging addresses the reference count will
>> >                           * still be above zero. We therefore reset it to
>> >                           * make sure that the prefix really gets purged.
>> >                           */
>> >                          pr->ndpr_refcnt = 0;
>
> Do you think that hack is really necessary?

Maybe not, but I'm not sure for now.

I'll investigate it when I work on MP-ifying the default route list
and the prefix list.

  ozaki-r