named: error sending response

[huub]

Op sommige nodes komen in /var/log/messages hele series boodschappen voor als:

"Aug 25 08:21:54 HybridPlantsoen2 named[1781]: client 172.17.169.67#64621: error sending response: host unreachable"
...
Aug 25 09:27:28 HybridPlantsoen2 last message repeated 3 times"

Deze client is (althans soms) verbonden met de omni (wlan0).

lease 172.17.169.67 {

starts 6 2012/08/25 09:15:23;
ends 6 2012/08/25 09:25:23;
cltt 6 2012/08/25 09:15:23;
binding state active;
next binding state free;
rewind binding state free;
hardware ethernet 60:33:4b:57:6c:61;
uid "\001`3KWla";

Het MAC adres schijnt te horen bij Acuity Imaging (?)
Google:
RVSI Acuity Imaging manufactures equipment to monitor product quality using camera systems. Verification of product levels, label verification/positioning, and visual item counting are some of the tasks that their equipment accomplishes.