dns problem resolution?

Re: dns problem resolution?

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Chris -

Can you repost these instructions?

- John

>Explicit instructions for compiling version 9.3.0 are included in
>the other message thread. If you need more help than that, feel free
>to contact me off-list.
>
>Chris Buxton
>Men & Mice - Making DNS Easy
>Customer Service and Sales Engineer
>
>At 1:58 PM -0800 11/4/04, Jody McAlister wrote:
>>I have version 9.2.3. I see other threads on how to upgrade so
>>I'll read those. But I'm a unix newbie so compiling and such is
>>out of my league.
>>On Nov 4, 2004, at 11:42 AM, Men & Mice Support wrote:
>>
>>>What version of named do you have? Apparently, this option is only
>>>available with version 9.3.0 and later.
>>>
>>>You can find out your version with this command:
>>>
>>>named -v
>>>
>>>Chris Buxton
>>>Men & Mice - Making DNS Easy
>>>Customer Service and Sales Engineer
>>>
>>>At 10:35 AM -0800 11/4/04, Jody McAlister wrote:
>>>>I've tried this on two seperate machines , (10.3.2 & 10.3.5) and
>>>>QDNS 4.6.1. It kills bind everytime I put the -4 in the Params
>>>>setting as instructed below. As soon as I remove it, all starts
>>>>up just fine.
>>>>
>>>>
>>>>On Nov 1, 2004, at 1:51 PM, Men & Mice Support wrote:
>>>>
>>>>>We're working along these same lines, but initial tests have not
>>>>>been uniformly positive.
>>>>>
>>>>>If you want to try this as described, a few changes will be
>>>>>required to work within the framework provided by QuickDNS. I'm
>>>>>going to assume you're using QuickDNS 4.6.1, since if you're
>>>>>using an earlier version either you need to update (for free if
>>>>>you're using version 4.5 or later), or you're probably not
>>>>>having this problem (since you're using BIND 8).
>>>>>
>>>>>Instead of modifying /System/Library/StartupItems/BIND/BIND,
>>>>>you'll need to modify /Library/StartupItems/QuickDNS/named. Look
>>>>>for a line like this, near the top:
>>>>>
>>>>>PARAMS=""
>>>>>
>>>>>Add -4 inside the quotes, like this:
>>>>>
>>>>>PARAMS="-4"
>>>>>
>>>>>This takes care of settings for both starting and restarting. To
>>>>>activate it, simply execute this (with root privileges):
>>>>>
>>>>>/Library/StartupItems/QuickDNS/named restart
>>>>>
>>>>>Chris Buxton
>>>>>Men & Mice - Making DNS Easy
>>>>>Customer Service and Sales Engineer
>>>>>
>>>>>At 2:18 PM -0800 11/1/04, Jody McAlister wrote:
>>>>>>The mac os x server list just posted this message regarding dns
>>>>>>lookups. they've been basically having the same thread that we
>>>>>>had last week.
>>>>>>
>>>>>>I haven't tried it yet. I'm posting so maybe men and mice can
>>>>>>confirm before I start playing with my server.
>>>>>>
>>>>>>*********************************************************************************************************************
>>>>>>(Copied message begins here...)
>>>>>>
>>>>>>A more complex, but more reliable fix MacFixIt reader Ken has
>>>>>>discovered a clever workaround that involves modifying the
>>>>>>operation of Mac OS X's "named" daemon -- the DNS server that
>>>>>>is part of the BIND set of UNIX DNS utilities.
>>>>>>
>>>>>> The theory behind why this fix works is as follows: root
>>>>>>domain servers appear to have recently been given IPv6
>>>>>>capability, and are now returning AAAA records in response to
>>>>>>name lookups.
>>>>>>
>>>>>> Ken writes "The simple upshot is that for whatever reason, the
>>>>>>first time named tries to go do a DNS query, it seems to decide
>>>>>>to try sending to an IPV6 server address, which is pretty much
>>>>>>guaranteed to fail for most users. Eventually this times out
>>>>>>and it retries, but by that time Safari has usually given up on
>>>>>>resolving the address and you get an error. The second time you
>>>>>>try it, the correct address has already been cached by the
>>>>>>system and everything works.
>>>>>>"I found that a very simple fix (if you don't mind editing OS
>>>>>>config files) was to modify the
>>>>>>/System/Library/StartupItems/BIND/BIND file to add the '-4'
>>>>>>option to named, which forces it to only use IPV4. For example,
>>>>>>the first part of the file normally looks like this:
>>>>>>
>>>>>> StartService ()
>>>>>> {
>>>>>> if [ "${DNSSERVER:=-NO-}" = "-YES-" ]; then
>>>>>> ConsoleMessage "Starting named"
>>>>>> named
>>>>>> fi
>>>>>> }
>>>>>>
>>>>>>
>>>>>>I changed the above to:
>>>>>>
>>>>>>StartService ()
>>>>>> {
>>>>>> if [ "${DNSSERVER:=-NO-}" = "-YES-" ]; then
>>>>>> ConsoleMessage "Starting named"
>>>>>> named -4
>>>>>> fi
>>>>>> }
>>>>>>
>>>>>>
>>>>>>"You should probably do the same thing for the RestartService
>>>>>>section in the file. You'll either need to restart named by
>>>>>>hand with the new option, or simply reboot your system to have
>>>>>>the above take effect (probably the safest thing to do). I
>>>>>>haven't yet tried digging into the BIND code deeply enough to
>>>>>>determine why it seems to favor IPV6 address over and over
>>>>>>again even though it never gets a valid response. It appears as
>>>>>>though there is some code within BIND to sort the servers on
>>>>>>response time, but IPV6 servers seem to always wind up at the
>>>>>>front of the list."

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