Date: Tue, 17 May 2005 12:55:57 +0300 (EEST) From: "Dmitry Sergienko" <dmitry@trifle.net> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/81147: em0 reinitialization while adding aliases to interface Message-ID: <200505170955.j4H9tvx4064635@www.trifle.net> Resent-Message-ID: <200505171000.j4HA0PK3058981@freefall.freebsd.org>
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>Number: 81147
>Category: kern
>Synopsis: em0 reinitialization while adding aliases to interface
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue May 17 10:00:25 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Dmitry Sergienko
>Release: FreeBSD 5.4-RELEASE i386
>Organization:
Trifle Co., Ltd.
>Environment:
>Description:
Network card looses link while adding an alias to interface em0.
This affects only em0 - neither vlans with vlandev em0, nor fxp0.
Problem was detected on two different machines with the same netcards
>How-To-Repeat:
Initial state:
root@www:/home/trooper# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=4b<RXCSUM,TXCSUM,VLAN_MTU,POLLING>
inet 195.24.128.164 netmask 0xfffffff0 broadcast 195.24.128.175
inet 195.24.128.72 netmask 0xffffffe0 broadcast 195.24.128.95
ether 00:0e:0c:33:c7:a8
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
root@www:/home/trooper# dmesg
root@www:/home/trooper#
Now let's add an alias to interface em0:
root@www:/home/trooper# ifconfig em0 alias 85.198.128.1/24 ; while true; do
date +%H:%M:%S; ifconfig em0 | egrep '(media|status)' ; sleep 1s; done
15:44:14
media: Ethernet autoselect
status: no carrier
15:44:15
media: Ethernet autoselect
status: no carrier
15:44:16
media: Ethernet autoselect
status: no carrier
15:44:17
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
root@www:/home/trooper# ifconfig em0
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=4b<RXCSUM,TXCSUM,VLAN_MTU,POLLING>
inet 195.24.128.164 netmask 0xfffffff0 broadcast 195.24.128.175
inet 195.24.128.72 netmask 0xffffffe0 broadcast 195.24.128.95
inet 85.198.128.1 netmask 0xffffff00 broadcast 85.198.128.255
ether 00:0e:0c:33:c7:a8
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
root@www:/home/trooper# dmesg
em0: Link is up 1000 Mbps Full Duplex
root@www:/home/trooper#
Alias has been added, but interface was reinitialized.
>Fix:
No fix currently found.
>Release-Note:
>Audit-Trail:
>Unformatted:
>System: FreeBSD www.trifle.net 5.4-RELEASE FreeBSD 5.4-RELEASE #3: Mon May 16 18:59:05 EEST 2005 trooper@www.trifle.net:/usr/obj/usr/src/sys/TRIFLE i386
Machine
~~~~~~~
CPU: Athlon 1700 XP+
M/B: ASUS A7N8X
Netcard: em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port 0x9800-0x983f mem 0xd9120000-0xd913ffff,0xd9100000-0xd911ffff irq 5 at device 9.0 on pci1; device = '82547EI Gigabit Ethernet Controller'
OS
~~
This bug affects both 4.10-RELEASE and 5.4-RELEASE.
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