wildcard in the domain name

Simon Waters Simon at wretched.demon.co.uk
Thu Jun 21 17:55:36 UTC 2001


Dykes Greg-FGD008 wrote:
> 
> Question:
> 
> Can you use wildcards in the domain name of an "A" record?
> Initial tests I run using NSlookup failed.

You can use THE wildcard "*" to match a label....

So

* IN A 127.0.0.1

Is a valid "IN A" record.

Thats about as far as it goes...

Example - guppy.eighth-layer.internal doesn't have an A
record....

more eighth-layer.internal.db
$TTL 30000; 500 minutes
@                 SOA linux1.eighth-layer.internal.
root.linux1.eighth-layer.internal. (
                                2001011701 ; serial
                                10800      ; refresh (20
seconds)
                                3600       ; retry (20
seconds)
                                604800     ; expire (3
weeks)
                                86400      ; minimum (1
hour)
                                )
@ NS      linux1.eighth-layer.internal
wlinux1 IN A 192.169.1.1
client1 IN A 192.168.1.254
ace     IN A 192.169.1.2
backup  IN A 192.168.1.3
linux1 IN A 192.168.1.1
* IN A 192.168.1.1

[root at linux1 zones]# /usr/local/bin/dig +short +nocomment
guppy.eighth-layer.internal A
192.168.1.1         

PS: Don't copy this example.... the values are daft and the
comments don't match in SOA.
-- 
Simon Waters
Are you using the Internet to best effect ?
www.eighth-layer.com
Tel: +44(0)1395 232769      ICQ: 116952768
Moderated discussion of teleworking issues at
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