On 28.10.22 08:26, Ondřej Surý wrote:
BIND 9 have support for writing plugins, and we would accept a
well written plugin that would allow generating the forward/reverse plugins on the fly.
There’s already a feature request for it here:
https://gitlab.isc.org/isc-projects/bind9/-/issues/1586
On 28. 10. 22 9:29, Matus UHLAR - fantomas wrote:
this request for ipv4 too.
I really don't think making generic named for ipv6 addresses
within range
bigger then e.g. /112 (64Ki addresses) makes any sense.
prehaps it may for small subsets of IP addresses
/64 is 18446744073709551616 addresses, that can't be scanned in
meaningful time and this number of DNS records would just mess
up any DNS servers' memory.
making BIND resilient against overflowing memory this way would
make more sense than creating generic addresses.
On 07.11.22 15:06, Petr Špaček wrote:
Yes, that's exactly why plugin is needed. The plugin can generate
answers on the fly without having all of them in memory.
On 07. 11. 22 15:23, Matus UHLAR - fantomas wrote:
what about BIND receiving those records?
I don't want my resolving DNS server to fill out cache by reverse
records of any remote ipv6 range/ranges.
We'd need to clean those too.
On 07.11.22 15:42, Petr Špaček wrote:
That's part of normal resolver operation: Garbage in - garbage out -
garbage eventually cleaned out from cache. There is nothing special
about PTR records in that regard.
sooner or later, but filling up cache with garbage could result in other
non-garbage records being flushed out.
Are there any mechanisms that would wipe this garbage before other records,
used more often even if not very recently?
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