Date: Fri, 15 Sep 2000 08:19:55 -0700 (PDT) From: Jin Guojun (DSD staff) <jin@iss-p1.lbl.gov> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/21292: ifconfig warn but does duplicate IP address Message-ID: <200009151519.IAA36871@iss-p1.lbl.gov>
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>Number: 21292
>Category: bin
>Synopsis: ifconfig warn but does duplicate IP address
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Sep 15 08:20:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Jin Guojun (DSD staff)
>Release: FreeBSD 4.1-RELEASE i386
>Organization:
>Environment:
Seen this issue in 4.1-RELEASE, but may in all releases.
When ifconfig two NIC to have the same address, ifconfig warns
ifconfig: ioctl (SIOCAIFADDR): File exists
but still assign the same IP to the second NIC. See Description.
>Description:
cal2 1 # ifconfig
sk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
inet6 fe80::200:5aff:fe98:4b68%sk0 prefixlen 64 scopeid 0x2
ether 00:00:5a:98:4b:68
media: autoselect (1000baseSX <half-duplex>) status: active
supported media: autoselect 1000baseSX <full-duplex> 1000baseSX none
sk1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 204.62.155.22 netmask 0xffffff00 broadcast 204.62.155.255
inet6 fe80::200:5aff:fe98:e448%sk1 prefixlen 64 scopeid 0x3
ether 00:00:5a:98:e4:48
media: autoselect (1000baseSX <full-duplex>) status: active
supported media: autoselect 1000baseSX <full-duplex> 1000baseSX none
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
cal2 2 # ifconfig sk0 204.62.155.22 netmask 0xffffff00 up
ifconfig: ioctl (SIOCAIFADDR): File exists
cal2 3 # ifconfig
sk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::200:5aff:fe98:4b68%sk0 prefixlen 64 scopeid 0x2
inet 204.62.155.22 netmask 0xffffff00 broadcast 204.62.155.255
ether 00:00:5a:98:4b:68
media: autoselect (1000baseSX <full-duplex>) status: active
supported media: autoselect 1000baseSX <full-duplex> 1000baseSX none
sk1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 204.62.155.22 netmask 0xffffff00 broadcast 204.62.155.255
inet6 fe80::200:5aff:fe98:e448%sk1 prefixlen 64 scopeid 0x3
ether 00:00:5a:98:e4:48
media: autoselect (1000baseSX <half-duplex>) status: active
>How-To-Repeat:
See Description.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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