NetBSD Problem Report #48450

From martin@duskware.de  Sun Dec 15 18:40:47 2013
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Date: Sun, 15 Dec 2013 19:40:42 CET
From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: ath (and athn) seem to loop back some packets
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>Number:         48450
>Category:       kern
>Synopsis:       ath (and athn) seem to loop back some packets
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          feedback
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 15 18:45:00 +0000 2013
>Closed-Date:    
>Last-Modified:  Wed Aug 01 06:56:06 +0000 2018
>Originator:     Martin Husemann
>Release:        NetBSD 6.99.28
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-owl.duskware.de 6.99.28 NetBSD 6.99.28 (NIGHT-OWL) #209: Fri Dec 13 10:01:22 CET 2013 martin@night-owl.duskware.de:/usr/src/sys/arch/amd64/compile/NIGHT-OWL amd64
Architecture: x86_64
Machine: amd64
>Description:

Sometimes IPv6 DAD fails for me:
athn0: DAD detected duplicate IPv6 address 2001:4dd0:ff00:9258:c617:feff:fece:3734: NS in/out=1/1, NA in=0

Most of the time it works fine, I have never seen it happen on any
other interface. Packettraces from other machines on the network and the
affected machine itself seem to indicate that noone else is sending answers
to the NS.

The athn0 interface is marked IFF_SIMPLEX, but it looks like the NS is looped
back "sometimes".

>How-To-Repeat:

run a machine with ath or athn network interface on an ipv6 enabled network.

>Fix:
n/a

>Release-Note:

>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/48450
Date: Wed, 18 Dec 2013 12:22:44 +0100

 I also see this issue sometimes with an ie(4) device on a sun3 emulated by
 TME.

 Martin

From: Masanobu SAITOH <msaitoh@execsw.org>
To: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
 gnats-admin@netbsd.org, netbsd-bugs@netbsd.org, martin@NetBSD.org
Cc: msaitoh@execsw.org
Subject: Re: kern/48450
Date: Wed, 1 Aug 2018 14:15:02 +0900

 On 2013/12/18 20:25, Martin Husemann wrote:
 > The following reply was made to PR kern/48450; it has been noted by GNATS.
 > 
 > From: Martin Husemann <martin@duskware.de>
 > To: gnats-bugs@NetBSD.org
 > Cc:
 > Subject: Re: kern/48450
 > Date: Wed, 18 Dec 2013 12:22:44 +0100
 > 
 >   I also see this issue sometimes with an ie(4) device on a sun3 emulated by
 >   TME.
 >   
 >   Martin

 Do you still have this problem on ath, athn and ie?
 For ie(4), I suspect sun3/dev/if_ie.c rev. 1.64 fixed this problem.



 -- 
 -----------------------------------------------
                  SAITOH Masanobu (msaitoh@execsw.org
                                   msaitoh@netbsd.org)

State-Changed-From-To: open->feedback
State-Changed-By: maya@NetBSD.org
State-Changed-When: Wed, 01 Aug 2018 06:56:06 +0000
State-Changed-Why:
Feedback requested.


>Unformatted:

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