NetBSD Problem Report #48996

From t.hash425@gmail.com  Tue Jul 15 15:24:27 2014
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Date: Wed, 16 Jul 2014 00:24:22 +0900
From: Takahiro HAYASHI <t.hash425@gmail.com>
To: gnats-bugs@gnats.NetBSD.org
Subject: ifconfig shows error message when changing MTU of bridge

>Number:         48996
>Category:       kern
>Synopsis:       ifconfig shows error message when changing MTU of bridge
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 15 15:25:00 +0000 2014
>Closed-Date:    Tue Jul 22 01:27:35 +0000 2014
>Last-Modified:  Tue Jul 22 01:27:35 +0000 2014
>Originator:     Takahiro HAYASHI
>Release:        NetBSD 6.99.47
>Organization:
>Environment:
System: NetBSD  6.99.47 NetBSD 6.99.47 (XHCIDEBUG) #2: Mon Jul 14 02:12:59 JST 2014  root@halt:/build/head/obj.amd64/sys/arch/amd64/compile/XHCIDEBUG amd64
Architecture: x86_64
Machine: amd64
>Description:
	When I change the MTU of bridge, ifconfig shows following error
	message:

	> ifconfig bridge0 mtu 1504
	> ifconfig: SIOCSIFMTU: Network dropped connection on reset

	The configuration is done normally and ifconfig exits with 0.
	This looks harmless but may confuse users or scripts.

	I guess something lacks in the case of ioctl SIOCSIFMTU in
	net/if_bridge.c, e.g. setting error = 0 when error == ENETRESET.

>How-To-Repeat:
	See Description.
>Fix:


-- 
t-hash

>Release-Note:

>Audit-Trail:
From: Ryota Ozaki <ozaki-r@NetBSD.org>
To: gnats-bugs@netbsd.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/48996: ifconfig shows error message when changing MTU of bridge
Date: Mon, 21 Jul 2014 17:43:38 +0900

 Hi HAYASHI-san,

 I fixed the problem by v1.88 of if_bridge.c:
 http://cvsweb.netbsd.org/cgi-bin/cvsweb.cgi/src/sys/net/if_bridge.c

 Could you confirm?

 Thanks,
   ozaki-r


 On Wed, Jul 16, 2014 at 12:25 AM, Takahiro HAYASHI <t.hash425@gmail.com> wrote:
 >>Number:         48996
 >>Category:       kern
 >>Synopsis:       ifconfig shows error message when changing MTU of bridge
 >>Confidential:   no
 >>Severity:       non-critical
 >>Priority:       low
 >>Responsible:    kern-bug-people
 >>State:          open
 >>Class:          sw-bug
 >>Submitter-Id:   net
 >>Arrival-Date:   Tue Jul 15 15:25:00 +0000 2014
 >>Originator:     Takahiro HAYASHI
 >>Release:        NetBSD 6.99.47
 >>Organization:
 >>Environment:
 > System: NetBSD  6.99.47 NetBSD 6.99.47 (XHCIDEBUG) #2: Mon Jul 14 02:12:59 JST 2014  root@halt:/build/head/obj.amd64/sys/arch/amd64/compile/XHCIDEBUG amd64
 > Architecture: x86_64
 > Machine: amd64
 >>Description:
 >         When I change the MTU of bridge, ifconfig shows following error
 >         message:
 >
 >         > ifconfig bridge0 mtu 1504
 >         > ifconfig: SIOCSIFMTU: Network dropped connection on reset
 >
 >         The configuration is done normally and ifconfig exits with 0.
 >         This looks harmless but may confuse users or scripts.
 >
 >         I guess something lacks in the case of ioctl SIOCSIFMTU in
 >         net/if_bridge.c, e.g. setting error = 0 when error == ENETRESET.
 >
 >>How-To-Repeat:
 >         See Description.
 >>Fix:
 >
 >
 > --
 > t-hash
 >

From: Takahiro HAYASHI <t.hash425@gmail.com>
To: Ryota Ozaki <ozaki-r@NetBSD.org>, gnats-bugs@netbsd.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, 
 netbsd-bugs@netbsd.org
Subject: Re: kern/48996: ifconfig shows error message when changing MTU of
 bridge
Date: Mon, 21 Jul 2014 18:52:47 +0900

 (07/21/14 17:43), Ryota Ozaki wrote:
 > Hi HAYASHI-san,
 >
 > I fixed the problem by v1.88 of if_bridge.c:
 > http://cvsweb.netbsd.org/cgi-bin/cvsweb.cgi/src/sys/net/if_bridge.c
 >
 > Could you confirm?

 It now works fine, thank you!


 -- 
 t-hash

State-Changed-From-To: open->closed
State-Changed-By: ozaki-r@NetBSD.org
State-Changed-When: Tue, 22 Jul 2014 01:27:35 +0000
State-Changed-Why:
I and the reporter confirmed the fix.


>Unformatted:

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