Hi Malcolm,
have you tried tweaking following configuration?
.. namedconf:statement:: sig0checks-quota
:tags: server
:short: Specifies the maximum number of concurrent SIG(0) signature checks
that can be processed by the server.
This is the maximum number of simultaneous SIG(0)-signed messages that
the server accepts. If the quota is reached, then :iscman:`named` answers
with a status code of REFUSED. The value of ``0`` disables the quota. The
default is ``1``.
.. namedconf:statement:: sig0checks-quota-exempt
:tags: server
:short: Exempts specific clients or client groups from SIG(0) signature
checking quota.
DNS clients can be exempted from the SIG(0) signature checking quota with the
:any:`sig0checks-quota-exempt` clause, using their IP and/or network
addresses. The default value is an empty list.
Example:
::
sig0checks-quota-exempt {
10.0.0.0/8;
2001:db8::100;
};
If that doesn't help, I would suggest to fill an issue in our GitLab, it seems
like a genuine bug.
Ondřej
--
Ondřej Surý (He/Him)
ond...@isc.org
My working hours and your working hours may be different. Please do not feel
obligated to reply outside your normal working hours.
> On 5. 11. 2024, at 17:53, Malcolm Scott <malcolm.sc...@cl.cam.ac.uk> wrote:
>
> On Tue, 5 Nov 2024, Malcolm Scott wrote:
>
>> Regardless I'll try adjusting the algorithm choice in case it does make a
>> difference.
>
> So far I can report that using a ECDSAP384SHA384 key for the SIG(0) still
> encounters the same failure mode. (For tedious reasons the client I chose to
> test can't do ED25519. More experimentation ongoing. But the problem is not
> specific to RSASHA512.)
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