lame-servers: error (FORMERR) resolving [something]

Daniele d.imbrogino at gmail.com
Fri Jan 11 09:05:16 UTC 2013


Port 53 is open, I can also telnet it from another box in the same network.
Now I think the problem can be on the packets size, because I'm trying
every solution but nothing works.


2013/1/9 Lyle Giese <lyle at lcrcomputer.net>

>  On 01/09/13 08:39, Daniele wrote:
>
> 2013/1/9 Phil Mayers <p.mayers at imperial.ac.uk>
>
>> On 09/01/13 13:53, Daniele wrote:
>>
>>> This is the scenario.
>>>
>>> I installed BIND9 via `apt-get` on a newly installed UBUNTU 12.04,
>>> virtualized on VirtualBox.
>>> The network works properly because if I indicate a different server from
>>> my own BIND9 (the first line of '/etc/resolv.conf' is, for example,
>>> `nameserver 8.8.8.8`) the lookups and any action on the Internet succeed.
>>>
>>>
>>  No, this assumption is not valid.
>
>
>  I meant that I can reach the Internet and, vice versa, the Internet can
> reach my terminal.
>
>
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>  Recursive queries that named does for a client are different than your
> machine as a dns client reaching out to Google's recursive service.
>
> You need to have UDP & TCP port 53 open to your recursive server(the one
> running named) first of all.  And if any network element within your
> network limits the size of UDP packets, you will have problems with EDNS0
> queries.
>
> On this box running named, try this:
>
> dig +trace www.msn.com
>
> dig +trace imperial.ac.uk
>
> After dig gets a copy of the root servers from the local named, it will do
> the same type of queries that a recursive name server does.
>
> Lyle Giese
> LCR Computer Services, Inc.
>
>
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