[wplug-bsd] Apache on FreeBSD 5.3 - "no route to host" error

[Brandon Kuczenski]

Looking through my apache logs, I am seeing a lot of errors like this:

...
[Mon Nov 07 16:32:02 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
[Mon Nov 07 16:32:03 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
[Mon Nov 07 16:32:04 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
[Mon Nov 07 16:32:05 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
...

It will say that every second for literally HOURS (the logfile is 20M 
now).  Any idea what this is?

I suspect it is an outside-world pest, and not an internal 
configuration problem, because these entries invariably begin immediately 
after the server rejects requests for nonexistent directories like 
<webpage-root>/phpBB2, <webpage-root>/forum, <webpage-root>/portal, and so 
on.

For example:

[Mon Nov 28 20:19:08 2005] [error] [client 210.97.243.129] File does not 
exist: /usr/local/www/data/main.php
[Mon Nov 28 20:19:08 2005] [error] [client 210.97.243.129] File does not 
exist: /usr/local/www/data/phpMyAdmin-2.5.6
[Mon Nov 28 20:19:09 2005] [error] [client 210.97.243.129] File does not 
exist: /usr/local/www/data/myadmin
[Mon Nov 28 20:19:10 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
[Mon Nov 28 20:19:11 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
[Mon Nov 28 20:19:12 2005] [warn] (65)No route to host: connect to 
listener on [::]:80
...

and then that continues for half a day.

I would love to block this sort of crap... does anyone know how?

-Brandon