Date: Wed, 2 Jan 2013 13:31:05 GMT From: Peter Wemm <peter@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/174897: Interface routes are broken Message-ID: <201301021331.r02DV56H056309@red.freebsd.org> Resent-Message-ID: <201301021340.r02De1Vd051504@freefall.freebsd.org>
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>Number: 174897
>Category: kern
>Synopsis: Interface routes are broken
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jan 02 13:40:01 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Peter Wemm
>Release: 10-current
>Organization:
FreeBSD
>Environment:
FreeBSD mailspool.freebsd.org 10.0-CURRENT FreeBSD 10.0-CURRENT #2 r244957: Wed Jan 2 11:18:56 UTC 2013
>Description:
Interface creation now fails to correctly install more-specific routes, or gets terribly confused.
This happens in two cases that are critical for freebsd.org cluster infrastructure machines.
1) Discard interface as a supernet is broken..
2) jail loopback substitution aliases are broken.
>How-To-Repeat:
The most urgent problem:
peter@mailspool:# % netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
root@mailspool:/home/peter # ifconfig -a | fgrep 127.0
inet 127.0.0.1 netmask 0xff000000
root@mailspool:/home/peter # ifconfig lo1 create
root@mailspool:/home/peter # ifconfig -a | fgrep 127.0
inet 127.0.0.1 netmask 0xff000000
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
root@mailspool:/home/peter # ifconfig lo1 inet 127.0.3.1/32 alias
ifconfig: ioctl (SIOCAIFADDR): File exists
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
127.0.3.1 link#4 UHS 0 0 lo0
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Note how it created something on the wrong interface.
root@mailspool:/home/peter # ifconfig lo1 | grep 127
root@mailspool:/home/peter # ifconfig lo0 | grep 127
inet 127.0.0.1 netmask 0xff000000
root@mailspool:/home/peter # ifconfig lo1 inet 127.0.3.1/32 -alias
ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
127.0.3.1 link#4 UHS 0 0 lo0
. and deleting the interface address doesn't work either.
root@mailspool:/home/peter # ifconfig lo1 destroy
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
127.0.3.1 link#4 UHS 0 0 lo0
root@mailspool:/home/peter # route delete 127.0.3.1
delete host 127.0.3.1
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
Trying it with a network instead of a host doesn't work either.
root@mailspool:/home/peter # ifconfig lo1 create
root@mailspool:/home/peter # ifconfig lo1 127.0.1.1/24
ifconfig: ioctl (SIOCAIFADDR): File exists
root@mailspool:/home/peter # netstat -rn | grep 127
127.0.0.1 link#3 UH 0 0 lo0
127.0.1.1 link#4 UHS 0 0 lo0
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
help
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