On Sun, 9 Nov 2003, [ISO-8859-2] Gannater János wrote:

> Hello,
>
> I've posted this question to the freebsd-newbies list, but there nobody
> could answer it.
> Please help me with this qestion...
>
> I have a box with 2 IP addresses (with aliases).
> I usually get these error messages:
> Connection attempt to UDP IP_ADDR_1:1409 from IP_ADDR_2:53
> What does this mean?

It looks an awful lot like DNS replies from a server in IP_ADDR_2
to a client that has stopped waiting for a response and closed
its socket.  Pretty normal.

> I don't have any DNS server installed on the computer and the firewall
> is disabled on the system as well.

Are you sure...?

> etc/hosts:
> ::1                     localhost localhost.domain.com
> 127.0.0.1           localhost localhost.domain.com
> IP_ADDR_1         www.domain.com www
> IP_ADDR_2        mail.domain.com mail
>
> etc/sysctl.conf
> net.inet.udp.blackhole=1

What about net.inet.udp.log_in_vain?

   $.02,
   /Mikko
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