On Thu, Jul 16, 2009 at 3:12 AM, Mark Rotteveel<Avalanche1979@...> wrote:

>> Once in a while (perhaps once in six months) we do get some temporary
>> stand-down when our DNS host moves things about the farm.  I usually get
>> advance warning of that - in hours rather than days - so usually by the time I
>> get any message the deed is done.
>
> I have been having this problem for a while now, but it seems to be increasing (see my other mail).
>
>> Occasionally, tracker.firebirdsql.org stalls, due to a bug in the rather
>> ancient version of the Atlassian Jira/Java framework it runs off.  Love it
>> or hate it, we just have to live with it for now.  Newer versions won't run
>> on the version of Linux we run.
>>
>> In recent days, some people have reported DNS problems from some European
>> ISPs that haven't been experienced by the rest of us.
>
> Well, I am located in Europe, the Netherlands to be exact. I have been having this problem with Ziggo (large cable provider), TUdelft/SURFnet (national university and research institute network) and the T-Systems/T-Mobile corporate network.
>
>> I suggest that, if you're getting persistent http access problems, you try
>> refreshing browser cache and/or bypassing any proxy http server that you
>> have configured.
>
> Well both are out, because it is simply a case of being unable to resolve the host name to an IP-address. So there isn't even any HTTP communication at that time. I am also not using any proxy.
>
>> All that said, reverse DNS does NOT work (according to our DNS host
>> provider, Sean's services are not configured to enable it) so nslookup won't help
>> you find the breakages.  A tracert could be slightly helpful.
>
> With nslookup does (forward) lookups, not reverse lookups. In this case that lookup (hostname to IP) is failing. Tracert is unhelpful since I don't get an IP address. Note that I am using Windows Vista and it is requesting both the IPv4 and IPv6 address (if available). I have had the same problems on Windows XP (no IPv6) and Linux though.
>
> The results of an nslookup with set debug, set d2 and set norecurse are:
> C:\Users\mark>nslookup
> Standaardserver:  ns1.tudelft.nl
> Address:  130.161.180.1
>
>> set debug
>> set d2
>> set norecurse
>> www.firebirdsql.org
> Server:  ns1.tudelft.nl
> Address:  130.161.180.1
>
> ------------
> SendRequest(), len 37
>    HEADER:
>        opcode = QUERY, id = 2, rcode = NOERROR
>        header flags:  query
>        questions = 1,  answers = 0,  authority records = 0,  additional = 0
>
>    QUESTIONS:
>        www.firebirdsql.org, type = A, class = IN
>
> ------------
> ------------
> Got answer (196 bytes):
>    HEADER:
>        opcode = QUERY, id = 2, rcode = NOERROR
>        header flags:  response, recursion avail.
>        questions = 1,  answers = 0,  authority records = 4,  additional = 4
>
>    QUESTIONS:
>        www.firebirdsql.org, type = A, class = IN
>    AUTHORITY RECORDS:
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 23
>        nameserver = 2.sr3.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr4.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr2.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr1.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ADDITIONAL RECORDS:
>    ->  2.sr1.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr2.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr3.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr4.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>
> ------------
> ------------
> SendRequest(), len 37
>    HEADER:
>        opcode = QUERY, id = 3, rcode = NOERROR
>        header flags:  query
>        questions = 1,  answers = 0,  authority records = 0,  additional = 0
>
>    QUESTIONS:
>        www.firebirdsql.org, type = AAAA, class = IN
>
> ------------
> ------------
> Got answer (196 bytes):
>    HEADER:
>        opcode = QUERY, id = 3, rcode = NOERROR
>        header flags:  response, recursion avail.
>        questions = 1,  answers = 0,  authority records = 4,  additional = 4
>
>    QUESTIONS:
>        www.firebirdsql.org, type = AAAA, class = IN
>    AUTHORITY RECORDS:
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 23
>        nameserver = 2.sr1.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr4.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr2.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr3.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ADDITIONAL RECORDS:
>    ->  2.sr1.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr2.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr3.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr4.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>
> ------------
> ------------
> SendRequest(), len 37
>    HEADER:
>        opcode = QUERY, id = 4, rcode = NOERROR
>        header flags:  query
>        questions = 1,  answers = 0,  authority records = 0,  additional = 0
>
>    QUESTIONS:
>        www.firebirdsql.org, type = A, class = IN
>
> ------------
> ------------
> Got answer (196 bytes):
>    HEADER:
>        opcode = QUERY, id = 4, rcode = NOERROR
>        header flags:  response, recursion avail.
>        questions = 1,  answers = 0,  authority records = 4,  additional = 4
>
>    QUESTIONS:
>        www.firebirdsql.org, type = A, class = IN
>    AUTHORITY RECORDS:
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 23
>        nameserver = 2.sr2.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr4.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr1.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr3.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ADDITIONAL RECORDS:
>    ->  2.sr1.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr2.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr3.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr4.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>
> ------------
> ------------
> SendRequest(), len 37
>    HEADER:
>        opcode = QUERY, id = 5, rcode = NOERROR
>        header flags:  query
>        questions = 1,  answers = 0,  authority records = 0,  additional = 0
>
>    QUESTIONS:
>        www.firebirdsql.org, type = AAAA, class = IN
>
> ------------
> ------------
> Got answer (196 bytes):
>    HEADER:
>        opcode = QUERY, id = 5, rcode = NOERROR
>        header flags:  response, recursion avail.
>        questions = 1,  answers = 0,  authority records = 4,  additional = 4
>
>    QUESTIONS:
>        www.firebirdsql.org, type = AAAA, class = IN
>    AUTHORITY RECORDS:
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 23
>        nameserver = 2.sr2.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr3.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr1.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ->  firebirdsql.org
>        type = NS, class = IN, dlen = 8
>        nameserver = 2.sr4.stargateinc.net
>        ttl = 85476 (23 hours 44 mins 36 secs)
>    ADDITIONAL RECORDS:
>    ->  2.sr1.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr2.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr3.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>    ->  2.sr4.stargateinc.net
>        type = A, class = IN, dlen = 4
>        internet address = 209.85.51.171
>        ttl = 32552 (9 hours 2 mins 32 secs)
>
> ------------
> *** ns1.tudelft.nl kan www.firebirdsql.org niet vinden:
> BAD ERROR VALUE

someone on #firebird irc channel has the same issue with Orange ISP in
France , can you call them or send an email to support

I have done some tests and dns servers seems to be fine ,
http://freedns.afraid.org/domain/dnstrace.php?domain=firebirdsql.org&submit=Trace
maybe you should use your own dns server (but is hard to install) or
an alternate one
http://alex.charrett.com/techstuff/bind9-win2k.html