Date: Fri, 8 Jul 2011 12:37:45 GMT From: Antonio Huete <ahuete.devel@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/158734: netif stop don't destroy cloned_interfaces Message-ID: <201107081237.p68Cbj6g075083@red.freebsd.org> Resent-Message-ID: <201107081240.p68Ce35D092466@freefall.freebsd.org>
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>Number: 158734
>Category: i386
>Synopsis: netif stop don't destroy cloned_interfaces
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-i386
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Jul 08 12:40:03 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Antonio Huete
>Release: 8.2-RELEASE
>Organization:
>Environment:
FreeBSD fbsd.localdomain 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011 root@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
>Description:
Hi,
I'm not sure if this is a bug or it is intentional, but when you try to restart netif service, it spits an error because cloned_interfaces are not destroyed upon netif stop.
fbsd# grep cloned /etc/rc.conf
cloned_interfaces="bridge0"
fbsd# /etc/rc.d/netif restart
Stopping Network: lo0 em0 plip0 bridge0.
lo0: flags=8048<LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet6 ::1 prefixlen 128
nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
em0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
ether 00:0c:29:69:54:73
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
bridge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 3a:51:06:6b:4d:87
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200
root id 00:00:00:00:00:00 priority 0 ifcost 0 port 0
ifconfig: create: bad value
Starting Network: lo0 em0.
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
nd6 options=3<PERFORMNUD,ACCEPT_RTADV>
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
ether 00:0c:29:69:54:73
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
It spits "ifconfig: create: bad value" because in /etc/network.subr in clone_up function line 502, it tries to create the clone without checking if it exist first. I wonder also if it would be fine just to send stderr to /dev/null or if it would be worthy to create a function to check the existence of the clone and skip its creation in that case.
Cheers,
Antonio Huete
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
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