what is going on??

[Eric Schuele]

Garrett Cooper wrote:
> Jonathan Horne wrote:
> 
>> Thanks for the replies everyone.
>>
>> It turned out to be partially ipv6, partially the ipfw on my pfsense
>> firewall.  Ultimately, the hangup was in sendmail, unable to start.  Ipv6
>> messages in the logevel 20 maillogs.
>>
>> However, during all my troubles, I was always able to resolve
>> ftp.freebsd.org (I don't think I mentioned that before), as well as I 
>> could
>> ping it and any number of other hosts as I scratched my head for 3 hours.
>>
>> Ultimately, I ended up compiling a new kernel anyway to enable SMP, and I
>> just removed the ipv6 support while I was there.  That and disabling the
>> userlan ftp-proxy application on my firewall, I was up and running this
>> morning within a few hours of compiling.
>>
>> So long fedora!
>>
>> :D
>>
>> jonathan
>>
>> -----Original Message-----
>> From: owner-freebsd-questions at freebsd.org
>> [mailto:owner-freebsd-questions at freebsd.org] On Behalf Of Eric Schuele
>> Sent: Friday, March 24, 2006 8:50 PM
>> To: Jonathan Horne
>> Cc: freebsd-questions at freebsd.org
>> Subject: Re: what is going on??
>>
>> Jonathan Horne wrote:
>>  
>>
>>> last night i took down my fedora sever to migrate it to freebsd 6.0.  
>>> ive
>>> done numerous tests on dev boxes in the past weeks getting ready for 
>>> this
>>> event, and they were all successful test installs.  i had all my 
>>> services
>>> down and i knew what i was supposed to be doing.
>>>
>>> however, when i get to first boot, the machine says:
>>>
>>> starting sshd.
>>>
>>> and hangs for a few minutes.  if i hit ctrl-c i see that sendmail is
>>>   
>> having
>>  
>>
>>> trouble starting.  i have a good DNS server listed, and the format of 
>>> the
>>> /etc/hosts file is correct.
>>>
>>> now im having trouble getting pkg_add -r to work, everything to
>>> ftp.freebsd.org times out.
>>>
>>> im in a bad situation, as the server i took down hosts all my personal
>>>   
>> email
>>  
>>
>>> accoutns (i had to add gmail just to even try to read the lsits).
>>>
>>> can someone shed some light for me here??
>>>   
>>
>> My .02 cents:
>> Double check your name resolution functionality.  Also, seems I had 
>> trouble once upon a time with IPV6 causing similar issues as well.  
>> But that was quite some time ago.
>>
>>  
>>
>>> thanks
>>> jonathan
>>> _______________________________________________
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>>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>>> To unsubscribe, send any mail to
>>>   
>> "freebsd-questions-unsubscribe at freebsd.org"
>>  
>>
>>
>>
>>  
>>
> Could have just turned the firewall off I would think in /etc/rc.conf. 
> Don't see why recompiling a kernel without ipv6 support was necessary as 
> that shouldn't have been preventing network connections at all.

FWIW...
I had trouble with name resolution when IPv6 was enabled, long time 
back.  It was explained to me (by Kris I think) that there are still 
quite a few 'broken' DNS servers out there.  'Broken' with respect to 
servicing IPv6 requests.  So your name resolver would seem to get hung 
up till it timed out (when you had IPv6 built in).  So the solution for 
me at the time, was simply remove it from my kernel config file.  I've 
done so ever since, as I do not *need* IPv6.  It wasn't 'preventing 
network connections'... it was causing sshd to hang while trying to 
resolve something.

HTH
> Good luck with FreeBSD :).
> -Garrett
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> 


-- 
Regards,
Eric