In the third case, the A records had expired from the cache (since the TTL on 
those records is 300 seconds = 5 minutes), so your resolver needed to fetch a 
fresh set from the yahoo.it nameservers -- the NS records of which were most 
likely cached from the first lookup -- but it didn't need to follow the 
referral chain all of the way down from the root. 19 msec.

thanks Kevin, now it's clear

is there a way to keep update cache of queries users will do?

Pol
_______________________________________________
Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe 
from this list

bind-users mailing list
bind-users@lists.isc.org
https://lists.isc.org/mailman/listinfo/bind-users

Reply via email to