Question about automatic promotion of NS records
DougB at dougbarton.net
Thu Jan 9 04:10:26 UTC 2003
Paul Roberts wrote:
> Can someone explain what automatic promotion of NS records is all
It's an evil, evil "convenience" hack that was rightfully not
perpetuated in bind 9.
> The way I understand it, if a server is authoritative for both the
> parent and sub-domain, you don't need to put the sub-domain NS records
> into the parent zone because BIND 8 will automatically "promote" the
> sub-domain NS records into the parent zone. Is that right?
> Now in BIND 9, apparently this doesn't happen any more, but is it
> really an issue? As the server is authoritative for both parent and
> sub-domains anyway we can still get away without adding the delegation
> records into the parent zone, but what side-effects does this have?
Many and varied. Your best bet is simply to do proper zone cuts,
including delegation in the parent zone, and proper glue records (as
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