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From: "Thomas S. Crum - AAA Web Solution, Inc." <tscrum@aaawebsolution.com>
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Date: Sat, 27 Nov 2004 16:44:24 -0500
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Subject: Port 53 requests happening a few times per second
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Here is the situation, I run bind as a root nameserver and all appears =
to be
operating normally (no apparent problems).  But, log_in_vain is =
reporting to
messages a few times per second that port 53 is being queried and =
nothing
"appears" to be listing on it. I monitored my forwarders ip addresses =
and
they reply fine.

I found a reference to search for "bind timeout problem", but could find
nothing that looked like any help.

Any ideas?

Couple of stats:
FreeBSD 4.10
BIND 8.3.7-REL
using 2 forwarders
127.0.0.1 in resolve.conf
log_in_vain=3D"YES" in rc.conf
allow all from any to any via lo0 in ipfw

server1# tail /var/log/messages
Nov 27 16:28:17 server1 /kernel: Connection attempt to UDP =
127.0.0.1:3350
from 127.0.0.1:53
Nov 27 16:28:18 server1 /kernel: Connection attempt to UDP =
127.0.0.1:1750
from 127.0.0.1:53
Nov 27 16:28:18 server1 /kernel: Connection attempt to UDP =
127.0.0.1:4321
from 127.0.0.1:53
Nov 27 16:28:18 server1 /kernel: Connection attempt to UDP =
127.0.0.1:4071
from 127.0.0.1:53
Nov 27 16:28:18 server1 /kernel: Connection attempt to UDP =
127.0.0.1:3037
from 127.0.0.1:53
Nov 27 16:28:18 server1 /kernel: Connection attempt to UDP =
127.0.0.1:4384
from 127.0.0.1:53
Nov 27 16:28:19 server1 /kernel: Connection attempt to UDP =
127.0.0.1:4566
from 127.0.0.1:53
Nov 27 16:28:19 server1 /kernel: Connection attempt to UDP =
127.0.0.1:1155
from 127.0.0.1:53
Nov 27 16:28:19 server1 /kernel: Connection attempt to UDP =
127.0.0.1:2761
from 127.0.0.1:53
Nov 27 16:28:20 server1 /kernel: Connection attempt to UDP =
127.0.0.1:3553
from 127.0.0.1:53

Best,

Thomas S. Crum