cvs commit: src/sbin/ifconfig ifconfig.c

Andrew Thompson thompsa at
Mon Mar 12 18:33:21 UTC 2007

On Mon, Mar 12, 2007 at 01:08:56PM +0000, Yar Tikhiy wrote:
> yar         2007-03-12 13:08:56 UTC
>   FreeBSD src repository
>   Modified files:
>     sbin/ifconfig        ifconfig.c 
>   Log:
>   Attempt to load the kernel module only if we are going to create a
>   new interface.  In other cases loading the module is unwanted and
>   can lead to ill side effects.  One such effect found is as follows:
>   "kldunload if_foo" tells the module to kill all its interfaces,
>   which results in messages sent to devd; the module unloads.  Then
>   devd starts processing the messages, which ends up in a etc script
>   running ifconfig fooX, which reloads the module.
Great catch! I had been wondering why it had been necessary to unload
networking modules twice lately.


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