I've got a BIND zone like this example.com There's a following A Record: @ --> destination IP
Now I want to update this record with, nsupdate. Can I just call update delete @ and then update add @ A new IP.
Or is this not possiboe with @ records?
Thanks.
Generally speaking, no you wouldn't be able too.
However, if you're using slaves (and are able to mass-change, or less-change values), then yes, you can use NSupdate.
More information on how to do it can be found here: https://debian-administration.org/article/591/Using_the_dynamic_DNS_editor_nsupdate
from: https://lists.isc.org/pipermail/bind-users/2008-May/070326.html
I can also confirm this with my own experience today.