Re: kern/57648: ure(4) ignores multicasts in promisc mode

[sc.dying%gmail.com@localhost]

The following reply was made to PR kern/57648; it has been noted by GNATS.

From: sc.dying%gmail.com@localhost
To: Martin Husemann <martin%duskware.de@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: kern/57648: ure(4) ignores multicasts in promisc mode
Date: Mon, 9 Oct 2023 08:00:13 +0000

 On 2023/10/09 7:46, Martin Husemann wrote:
 > On Mon, Oct 09, 2023 at 07:43:05AM +0000, sc.dying%gmail.com@localhost wrote:
 >> Yes, patched code builds and works.
 > 
 > I meant: have you verified the unpatched code actually does not work?
 
 Ah, without patch, it does not work.
 
 While testing usbnet patch, I've noticed
 ping and arping (uses broadcast) work, but
 ping6 (uses multicast) does not.
 That's why I sent this PR.
 
 > 
 >> ping6 to a address that is not any of ure under test
 >> generates ND multicast packet.
 >> If usbnet promisc bug is fixed, you can confirm that
 >> ure in promisc mode cannot observe this multicast
 >> on tcpdump.
 > 
 > Yes, that is a good test for this case (and I wouldn't be suprised if
 > the AM flag does not do what the name seems to imply).
 > 
 > Martin