pdnsd Error in udp send: Invalid argument
Matt Mills
I have been having problems with pdnsd since switching to 5.3-RELEASE.
I am using pdnsd-1.1.11a, installed from the ports collection. The
following error is always ouput when a query takes place:
Error in udp send: Invalid argument
I am using the exact same pdnsd.conf from a working 4.10-STABLE system,
so there should be no problems as far as that is concerned. I have
googled for this error and even emailed the author to no avail.
Anybody have any ideas?
--
Matt
Matt Mills
seems that this is indeed a FreeBSD-related problem, which can be worked
around if you use the ./configure option --disable-src-addr-disc.
I will email the port maintainer with the necessary technical details.
--
Matt
Matt Mills
The maintainer of the pdnsd port is apparently po...@oven.org. I sent an
email to this address with details of the problem and solution, but just
got a delivery failure notice.
Where do I go from here to get this solved?
--
Matt
Andrey Slusar
See the PR ports/73296 - this is a update to version 1.2. This bug is
reproduced on the version 1.2?
--
Andrey Slusar.
Matt Mills
> Mon, 22 Nov 2004 15:18:35 +0000, Matt Mills wrote:
>> The maintainer of the pdnsd port is apparently po...@oven.org. I
>> sent an email to this address with details of the problem and
>> solution, but just got a delivery failure notice.
>>
>> Where do I go from here to get this solved?
>
> See the PR ports/73296 - this is a update to version 1.2. This bug is
> reproduced on the version 1.2?
Yes, the bug is still existent in v1.2.
Just for clarity, the reply I had from the author of pdnsd which
confirmed a workaround can be found below.
<snip>
Based on the information you have given me, I have traced the source of
the error message to the sendmsg() call in the function
udp_answer_thread() in the file dns_answer.c. It seems to me that
something in the kernel is complaining about the way the "struct msghdr
*msg" argument is set up. My guess is that the kernel doesn't like the
control message given via the msg_control field of the struct msghdr.
To test this, I suggest that you recompile pdnsd after running configure
with the --disable-src-addr-disc option. This will set the msg_control
field to NULL, so if this really was the problematic part of the data
structure, the sendmsg() call should be able to work normally.
Of course with the --disable-src-addr-disc, UDP source address discovery
will be disabled. I don't know how important this is to you.
The control message necessary for UDP source address discovery is very
platform dependent and rather obscure. Unfortunately, I don't have any
experience with FreeBSD systems, so we will need input from someone with
the necessary expertise to get this fixed properly.
</snip>
Shall I commit a PR, or does anyone have further insights?
--
Matt