Non-Octet Boundary Delegation (RFC 4183)
dhcp1 at thehobsons.co.uk
Thu Sep 22 06:58:40 UTC 2011
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
Q: What is the most annoying thing in e-mail?
>Thank you Simon, thank you Andris.
>Andris, problem is that in that case I will need to use "nslookup
>126.96.36.199.ptr-pa.lan.orga.ru instead of "nslookup 10.133.27.68" to
>get DNS record.
You **ALWAYS** lookup by the normal IP - eg dig -x 10.133.27.68
That results in a lookup of 188.8.131.52.in-addr.arpa.
The trick is that instead of that being a PTR to some FQDN, it is a
pointer to 184.108.40.206.ptr-pa.lan.orga.ru.
Ie, in the 27.133.10.in-addr.arpa zone there'll be a record
68 PTR 220.127.116.11.ptr-pa.lan.orga.ru.
Then in the ptr-pa.lan.orga.ru zone, you have an entry dynamically
created by DHCP which is "18.104.22.168. PTR <some fqdn>".
It's some time since I played with this, but I recall it "just works"
- looking again at RFC 4183, I certainly didn't do it that way. But
I'm happy to be corrected if I'm wrong.
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