lo: Disabled Privacy Extensions
Knute Johnson
knute2009 at knutejohnson.com
Fri Dec 4 17:17:17 UTC 2009
Tom H wrote:
>>>> I'm getting a recurring kernel error about every 30 seconds to a minute.
>>>> This is from logwatch but the kernel and messages logs are similar.
>>>> 1 Time(s): [ 9503.788362] lo: Disabled Privacy Extensions
>>>> 1998 Time(s): lo: Disabled Privacy Extensions
>
>>> I've got no ideas how to prevent the messages, but I wouldn't worry about it
>>> (except that that's on the order of 2000 extra lines of logging every day) -
>>> it's the loopback (127.0.0.1) interface and really can't use and doesn't
>>> need "Privacy Extensions".
>
>> Any idea where Privacy Extensions are configured?
>
> It is a kernel config - IPV6_PRIVACY - and it is set to "y" in KK so
> you would have to recompile your kernel in order to set it to "n" or
> "m".
>
> The corresponding proc entry is
> /proc/sys/net/ipv6/conf/lo/use_tempaddr
>
> and when I "sysctl" or "cat" mine, it returns "-1". (And it is 0 for wlan0.)
>
> You could sysctl yours to "-1" if it isn't and it might stop the
> "Privacy" messages. (And if it isn't set to "-1" for KK server
> edition, you might want to file a bug report.)
>
> The values that use_tempaddr can take are
>
> <= 0 disable Privacy Extensions
>
> == 1 enable Privacy Extensions, but prefer public addresses over
> temporary addresses
>
>> 1 enable Privacy Extensions and prefer temporary addresses over public addresses
>
> Default 0 (for most devices)
>
> Default -1 (for point-to-point devices and loopback devices)
>
Tom:
Thanks for the reply. use_tempaddr is -1. Since the error says that
Privacy Extensions are turned off should I set it to 0 to get rid of the
messages? What will that do?
Thanks,
--
Knute Johnson
knute2009 at knutejohnson.com
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