Re: Chaining NOTIFY and slave servers - is it supported?

2020-04-21 Thread Tony Finch
Petr Bena wrote: > > So when someone changes zone on A via nsupdate, NOTIFY and subsequent IXFR > goes like this: A -> B -> C instead of: > > A -> B >   -> C Chaining NOTIFY like A -> B -> C is very common - I would guess most TLDs do it. In many cases, A is a secure hidden primary, B are zone tr

Re: Chaining NOTIFY and slave servers - is it supported?

2020-04-21 Thread Anand Buddhdev
On 21/04/2020 17:05, Petr Bena wrote: Hi Petr, > So when someone changes zone on A via nsupdate, NOTIFY and subsequent > IXFR goes like this: A -> B -> C instead of: This is just fine. There are many DNs setups organised like this. Your configuration isn't unique or strange. > What confuses me

Chaining NOTIFY and slave servers - is it supported?

2020-04-21 Thread Petr Bena
Hello, In our massive corporate setup with hundreds BIND servers all around planet, we have some "funny" configurations (please don't ask why :)), that seem to be actually working just fine, but I would like to understand if this is actually supported setup, or they just work by accident or d