[dns-operations] Wildcard DNS for any IP address

[Steven Carr]

Link doesn't work, DNS resolution fails, ns6.gandi.net has no zone info for
xip.io, so it can't resolve ns-1.xip.io - think someone needs to check
their master/slave config...

sjcarr at grover:~ $ dig xip.io +trace

; <<>> DiG 9.7.3-P3 <<>> xip.io +trace
;; global options: +cmd
.            401755    IN    NS    m.root-servers.net.
.            401755    IN    NS    l.root-servers.net.
.            401755    IN    NS    j.root-servers.net.
.            401755    IN    NS    e.root-servers.net.
.            401755    IN    NS    h.root-servers.net.
.            401755    IN    NS    i.root-servers.net.
.            401755    IN    NS    d.root-servers.net.
.            401755    IN    NS    c.root-servers.net.
.            401755    IN    NS    g.root-servers.net.
.            401755    IN    NS    b.root-servers.net.
.            401755    IN    NS    a.root-servers.net.
.            401755    IN    NS    k.root-servers.net.
.            401755    IN    NS    f.root-servers.net.
;; Received 228 bytes from 10.0.10.30#53(10.0.10.30) in 7 ms

io.            172800    IN    NS    b.nic.io.
io.            172800    IN    NS    ns1.communitydns.net.
io.            172800    IN    NS    b.ns13.net.
io.            172800    IN    NS    a.nic.io.
io.            172800    IN    NS    ns3.icb.co.uk.
io.            172800    IN    NS    b.nic.ac.
io.            172800    IN    NS    a.ns13.net.
;; Received 348 bytes from 2001:dc3::35#53(m.root-servers.net) in 307 ms

xip.io.            86400    IN    NS    ns6.gandi.net.
xip.io.            86400    IN    NS    ns-1.xip.io.
;; Received 86 bytes from 49.212.31.192#53(a.ns13.net) in 412 ms

;; Received 24 bytes from 217.70.177.40#53(ns6.gandi.net) in 46 ms




sjcarr at grover:~ $ dig @ns6.gandi.net xip.io ns

; <<>> DiG 9.7.3-P3 <<>> @ns6.gandi.net xip.io ns
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 46401
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;xip.io.                IN    NS

;; Query time: 41 msec
;; SERVER: 217.70.177.40#53(217.70.177.40)
;; WHEN: Fri Jun  8 23:17:32 2012
;; MSG SIZE  rcvd: 24






On 8 June 2012 19:04, Paul Hoffman <paul.hoffman at vpnc.org> wrote:

> See <http://xip.io/>.
>
> I'm not sure how relevant it is to DNS operations, but there could be
> interesting implications.
>
> --Paul Hoffman
>
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