[MaraDNS list] deadwood: ttl is not aging on continuous nslookup/dig

[Srinivas Hebbar]

Hello,

With the A record TTL set to 60, the aging stops at "30" as long as
I do dig every second. If I stop dig for 30 seconds, the cache  expires and
new record with ttl 60 is responded by deadwood.

This is happening on both 3.0.x and 3.1.x releases.

Unless I stop dig for more than 30 seconds, the above record is never get
updated.

I have lots of LAN clients and the request is coming so often that the old
record never expires
from the cache.

dig LOG:
/home/shyam> while [ 1 ]; do dig @localhost test.testing.tindip.com | grep
^test; sleep 1; done

test.testing.tindip.com. 60     IN      A       2.2.2.2
test.testing.tindip.com. 59     IN      A       2.2.2.2
test.testing.tindip.com. 58     IN      A       2.2.2.2
test.testing.tindip.com. 57     IN      A       2.2.2.2
test.testing.tindip.com. 56     IN      A       2.2.2.2
test.testing.tindip.com. 55     IN      A       2.2.2.2
test.testing.tindip.com. 54     IN      A       2.2.2.2
test.testing.tindip.com. 53     IN      A       2.2.2.2
test.testing.tindip.com. 52     IN      A       2.2.2.2
test.testing.tindip.com. 51     IN      A       2.2.2.2
test.testing.tindip.com. 50     IN      A       2.2.2.2
test.testing.tindip.com. 49     IN      A       2.2.2.2
test.testing.tindip.com. 48     IN      A       2.2.2.2
test.testing.tindip.com. 47     IN      A       2.2.2.2
test.testing.tindip.com. 46     IN      A       2.2.2.2
test.testing.tindip.com. 45     IN      A       2.2.2.2
test.testing.tindip.com. 44     IN      A       2.2.2.2
test.testing.tindip.com. 43     IN      A       2.2.2.2
test.testing.tindip.com. 42     IN      A       2.2.2.2
test.testing.tindip.com. 41     IN      A       2.2.2.2
test.testing.tindip.com. 40     IN      A       2.2.2.2
test.testing.tindip.com. 39     IN      A       2.2.2.2
test.testing.tindip.com. 38     IN      A       2.2.2.2
test.testing.tindip.com. 37     IN      A       2.2.2.2
test.testing.tindip.com. 36     IN      A       2.2.2.2
test.testing.tindip.com. 35     IN      A       2.2.2.2
test.testing.tindip.com. 34     IN      A       2.2.2.2
test.testing.tindip.com. 33     IN      A       2.2.2.2
test.testing.tindip.com. 32     IN      A       2.2.2.2
test.testing.tindip.com. 31     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2

test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 28     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2
test.testing.tindip.com. 29     IN      A       2.2.2.2


Thanks,
Hebbar.