svn commit: r304436 - in head: . sys/netinet

[Ryan Stone]

On Sat, Aug 20, 2016 at 11:01 AM, Bruce Simpson <bms at fastmail.net> wrote:

> tun(4) on the other hand is a plain, PPP-like, IP tunnel.
>

Can you send a broadcast packet through an L3 tunnel?  I thought that a L2
tunnel was required.

But this mbuf flag is not guaranteed to be set in all situations; e.g.
> where the link layer does not have the concept of broadcast being distinct
> from other kinds of network traffic. PPP and ATM are the most obvious
> examples.
>

We don't support ATM, but PPP is a good example.  I hadn't thought of
that.  Hm, ip_input() already has to check for a broadcast IP.  What it set
M_BCAST on the mbuf at that time?