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Re: AW: AW: AW: AW: Re: dns_v4_first on ignored?

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On 12/02/2013 8:41 p.m., Sandrini Christian (xsnd) wrote:
Hi

I have now enabled ipv6

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
     link/ether 00:50:56:a6:07:27 brd ff:ff:ff:ff:ff:ff
     inet 160.85.104.14/24 brd 160.85.104.255 scope global eth1
     inet6 fe80::250:56ff:fea6:727/64 scope link
        valid_lft forever preferred_lft forever

When I dig for AAAA record to ipv6.idrobot.net I don't get a timeout

dig AAAA ipv6.idrobot.net

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.6 <<>> AAAA ipv6.idrobot.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 34596
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;ipv6.idrobot.net.              IN      AAAA

;; AUTHORITY SECTION:
net.                    900     IN      SOA     a.gtld-servers.net. nstld.verisign-grs.com. 1360654692 1800 900 604800 86400

;; Query time: 17 msec
;; SERVER: 160.85.192.100#53(160.85.192.100)
;; WHEN: Tue Feb 12 08:38:40 2013
;; MSG SIZE  rcvd: 107

When I dig for AAAA record to www2.zhlex.zh.ch I get one

dig AAAA www2.zhlex.zh.ch

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.6 <<>> AAAA www2.zhlex.zh.ch
;; global options: +cmd
;; connection timed out; no servers could be reached


Do you have the same timout as well with that host and ipv6 running? This is a domain which is queried a lot.

Yes. I traced it through three CNAME redirections to a pair of DNS servers which do not respond to any AAAA queries.


# dig AAAA zhcompublicweb1.subd.djiktzh.ch @lc1.djiktzh.ch

; <<>> DiG 9.3.6-P1 <<>> AAAA zhcompublicweb1.subd.djiktzh.ch @lc1.djiktzh.ch
;; global options:  printcmd
;; connection timed out; no servers could be reached


# dig AAAA zhcompublicweb1.subd.djiktzh.ch @lc2.djiktzh.ch

; <<>> DiG 9.3.6-P1 <<>> AAAA zhcompublicweb1.subd.djiktzh.ch @lc2.djiktzh.ch
;; global options:  printcmd
;; connection timed out; no servers could be reached


Those DNS servers lc1.djiktzh.ch and lc2.djiktzh.ch are broken.

Amos


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