From Newsgroup: comp.protocols.dns.bind

When I got that message I had to unblock tcp port 53 on my firewall.
Jim
-----Original Message-----
From: bind-users <bind-users-bounces@lists.isc.org> On Behalf Of Anand Buddhdev Sent: Tuesday, June 16, 2020 11:28 AM
To: bind-users <bind-users@lists.isc.org>
Subject: [Non-DoD Source] BIND 9.16 incoming TCP connection errors
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Hi folks,
I'm running an authoritative server on BIND 9.16. It gets about 3500
q/s, of which around 200 q/s are over TCP. At least, this is what DSC
reports (DSC is a libpcap application sniffing traffic independent of BIND).
In my named.conf, I have set:
reserved-sockets 1000;
tcp-clients 900;
Yet, when BIND is running, it is frequently logging:
16-Jun-2020 15:21:58.815 general: Accepting TCP connection failed:
socket is not connected
What does this log message mean? I don't think it's related to quota,
because the quota message is different ("TCP connection failed: quota reached").
Another question I have is that the "reserved-sockets" option has a note saying that it might go away. Does this mean that it's not actually
necessary? The documentation suggests that I have to increase it if I
want to increase the value of "tcp-clients".
Regards,
Anand
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