[dns-operations] 2600::a1 (ns1-auth.sprintlink.net)

[Alarig Le Lay]

On jeu. 16 févr. 14:49:10 2017, Jim Popovitch wrote:
> These syslog errors (and some googling) indicate it may be a bind
> specific issue.  (I'm using bind9 as a caching resolver)

I’m using unbound 1.5.9-3 for my resolver, and I’m also seeing this
issue:

alarig at airmure ~ % dig +tcp -t MX ups.com @ns1-auth.sprintlink.net

; <<>> DiG 9.11.0-P2 <<>> +tcp -t MX ups.com @ns1-auth.sprintlink.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: BADVERS, id: 63550
;; flags: qr rd ad; QUERY: 0, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; Query time: 90 msec
;; SERVER: 2600::a1#53(2600::a1)
;; WHEN: Thu Feb 16 21:08:26 CET 2017
;; MSG SIZE  rcvd: 23


The issue seems to be limited to IPv6:

alarig at airmure ripe-atlas-community-contrib % python2 ./resolve-name.py --type MX --nameserver=ns1-auth.sprintlink.net --requested=50 ups.com 
Nameserver ns1-auth.sprintlink.net
[10 email-vip.ups.com. 10 email2-vip.ups.com.] : 50 occurrences 
Test #7819393 done at 2017-02-16T20:24:59Z
alarig at airmure ripe-atlas-community-contrib % python2 ./resolve-name.py --ipv6 --type MX --nameserver=ns1-auth.sprintlink.net --requested=50 ups.com    
Warning, probe 11292 never got reply from any resolver
Warning, probe 16741 never got reply from any resolver
Warning, probe 18137 never got reply from any resolver
Warning, probe 18387 never got reply from any resolver
Warning, probe 21470 never got reply from any resolver
Warning, probe 24568 never got reply from any resolver
Warning, probe 24901 never got reply from any resolver
Warning, probe 28818 never got reply from any resolver
Warning, probe 31941 never got reply from any resolver
Warning, probe 31969 never got reply from any resolver
Nameserver ns1-auth.sprintlink.net
[NETWORK PROBLEM WITH RESOLVER] : 13 occurrences 
[10 email-vip.ups.com. 10 email2-vip.ups.com.] : 27 occurrences 
[TIMEOUT(S)] : 10 occurrences 
Test #7819394 done at 2017-02-16T20:26:36Z

-- 
alarig
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