Problems with subnetting a class c and bind

Adrian Goins Adrian at mamamedia.com
Mon Nov 8 21:31:17 UTC 1999


ouch - this is all quite confusing to me.

if you have allocated a portion of space to a client, set it up as follows:

assumed:  you are responsible for 251.218.205.in-addr.arpa
assumed:  your client runs their own DNS for domain.com
assumed:  your client is going to run reverse for the subnet

in the forward zone file for domain.com:

somename	IN	A	205.218.251.160
someother	IN	A	205.218.251.161

$ORIGIN rev.domain.com.
160		IN	PTR	somename.domain.com.
161		IN	PTR	someother.domain.com.

in your IN-ADDR.ARPA file for the zone:

160		IN	CNAME	160.rev.domain.com.
161		IN	CNAME	161.rev.domain.com.


this allows you to refer all reverse lookups to the NS responsible for
domain.com, and it also allows them to keep them updated.  i've run DNS like
this for years.

Adrian Goins <adrian at mamamedia.com>
Website Server Manager
212.334.3277 x417

> Ramón Uriel Alvarez Rayo           Teléfono: (505) 2783131 ext 2823


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