On 07/01/2010 06:05 PM, Rick Stevens wrote:
> On 07/01/2010 11:20 AM, JD wrote:
>> On 07/01/2010 10:42 AM, Tom Horsley wrote:
>>> Unfortunately, enabling or disabling IPV6 doesn't seem to have
>>> much to do with the library doing V6 DNS lookups. I could
>>> swear there was something added to nsswitch.conf or resolv.conf
>>> that you could set to disable v6 dns requests, but I can't
>>> remember what it was called.
>>>
>>> I run bind as a caching nameserver, forwarding lookups to my
>>> ISP's server and set the -4 option on the command line to
>>> make it stick to ipv4 and all my DNS lookup problems vanished.
>> bind is too complex to run and maintain.
>> Really, it is a huge overkill for what I need.
>>
>> I hope nscd authors will fix it soon so it does not
>> purge it's cache every few seconds. I check'ed it's
>> config file and the
>> restart-interval 3600
>> seems reasonable.
> Please check the "positive-time-to-live" option in the "hosts" section
> of /etc/nscd.conf and make sure it's set to 3600.
I edited /etc/nscd.conf and set
positive-time-to-live 3600
and I was no longer able to restart nscd service.
I commented that line out, and I was able to restart it.
> "restart-interval" is only of use if you have "paranoia" set to "yes".
> It's set to "no" by default, so "restart-interval" isn't even used.
> "man nscd.conf" for further info. I think these are where your problems
> are. I use nscd assiduously and it doesn't behave like that for me.
>
> If you really want to disable IPV6, edit
> /etc/modprobe.conf/blacklist.conf and add a line:
>
> blacklist ipv6
You mean /etc/modprobe.d/blacklist.conf
OK. I did that. But that was not the issue
that was causing me any problems with nscd.
> Go through any /etc/sysconfig/network-scripts/ifcfg-* scripts and if
> you see any "IPV6INIT=" or "IPV6_AUTOCONF=" lines, make sure they're set
> to "no". Finally, edit /etc/sysconfig/network and if you see a
> "NETWORKING_IPV6=yes" line, either remove it or set it to "no". Reboot
> and ipv6 goes bye-bye.
My /etc/sysconfig/networking/devices/ifcfg-ra0 already has:
IPV6INIT=no
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