[net-dns-users] New Release candidates

tlhackque tlhackque at yahoo.com
Fri Oct 24 10:46:56 UTC 2014

On 24-Oct-14 06:00, net-dns-users-request at nlnetlabs.nl wrote:
> 1. Net::DNS::SEC 0.21 released (Willem Toorop)
> 2. Release candidate for Net::DNS 0.81 (Willem Toorop)
First, a public thank you to Dick Franks for promptly working on the RTs
that I raised, including through the weekend!  And thanks to anyone else
who worked behind the scenes.

Second, in attempting to get the releases mentioned for some testing, I
discovered that net-dns.org's IPv6 address doesn't seem to have the
webserver on-line:

 wget http://www.net-dns.org/download/Net-DNS-0.80_2.tar.gz
--2014-10-24 06:07:04-- 
Resolving www.net-dns.org (www.net-dns.org)... 2a04:b900::2:0:0:22,
Connecting to www.net-dns.org (www.net-dns.org)|2a04:b900::2:0:0:22|:80...

I have connectivity to the IPv6 address:
 ping6 2a04:b900::2:0:0:22
PING 2a04:b900::2:0:0:22(2a04:b900::2:0:0:22) 56 data bytes
64 bytes from 2a04:b900::2:0:0:22: icmp_seq=0 ttl=51 time=146 ms
64 bytes from 2a04:b900::2:0:0:22: icmp_seq=1 ttl=51 time=142 ms

--- 2a04:b900::2:0:0:22 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 142.109/144.355/146.602/2.278 ms, pipe 2

 telnet 2a04:b900::2:0:0:22 80
Trying 2a04:b900::2:0:0:22...

 host www.net-dns.org
www.net-dns.org has address
www.net-dns.org has IPv6 address 2a04:b900::2:0:0:22

So there's a firewall or webserver configuration issue.

I did access the files via IPv4, but you probably should fix IPv6...

There is also a rather unusual PTR record/CNAME chain for the IPv6 address:
 dig -x 2a04:b900::2:0:0:22

; <<>> DiG 9.9.1-P2 <<>> -x 2a04:b900::2:0:0:22
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33293
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2

; EDNS: version: 0, flags:; udp: 4096

IN CNAME 2225 IN     PTR     blogs.nlnetlabs.nl.

140.49.185.in-addr.arpa. 2225   IN      NS      mcvax.nlnetlabs.nl.
140.49.185.in-addr.arpa. 2225   IN      NS      ns.nlnetlabs.nl.

mcvax.nlnetlabs.nl.     5618    IN      A

;; Query time: 8 msec

 I don't think it's illegal - but it is strange to have an IPv6 address
PTR resolve to a different hostname... IPv6 addresses are cheap enough
that it's recommended to allocate one per service.

This communication may not represent my employer's views,
if any, on the matters discussed.

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