Client object identifier Bind 9.11

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Client object identifier Bind 9.11

Miguel Mucio Santos Moreira
Hello,
I've been noticed a different information on queries.log file in compare with older bind versions.
I was looking for this on internet and I found out it's named as client object identifier and formed by a fixed string @0x7 plus a hexadecimal number, as in the example below.
29-Aug-2019 09:07:00.453 queries: info: client @0x7f68f80c7180 172.22.0.2#61647

I'd like to know if this hexadecimal number is fixed, in other words if each dns client (smartphones, workstations, etc) has a specific hexadecimal number, how this string is constructed on bind and what kind of information would be possible to extract from that string.

Thanks in advance.

--

Miguel Moreira
DTE/SRE/GRE - Gerência de Redes
+55(31)3339-1401
PRODEMGE - Companhia de Tecnologia da Informação do Estado de Minas Gerais



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Re: Client object identifier Bind 9.11

Tony Finch
Miguel Mucio Santos Moreira <[hidden email]> wrote:
>
> I'd like to know if this hexadecimal number is fixed, in other words if
> each dns client (smartphones, workstations, etc) has a specific
> hexadecimal number, how this string is constructed on bind and what kind
> of information would be possible to extract from that string.

It's the address in memory of the data structure BIND uses to hold its
working state for the query.

Tony.
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f.anthony.n.finch  <[hidden email]>  http://dotat.at/
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