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Re: [public-dns-discuss] Re: Ipv4 and ipv6: query results are different



It seems Alibaba finally fixed the problem:

$ dig www.aliexpress.com @2001:4860:4860::8888

; <<>> DiG 9.9.5-3ubuntu0.17-Ubuntu <<>> www.aliexpress.com @2001:4860:4860::8888
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64023
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.aliexpress.com. IN A

;; ANSWER SECTION:
www.aliexpress.com. 34 IN CNAME areaall-akamai.aliexpress.com.
areaall-akamai.aliexpress.com. 34 IN CNAME areaall-akamai.aliexpress.com.gds.alibabadns.com.
areaall-akamai.aliexpress.com.gds.alibabadns.com. 119 IN CNAME eu1111.alicdn.com.edgekey.net.
eu1111.alicdn.com.edgekey.net. 299 IN CNAME e11956.b.akamaiedge.net.
e11956.b.akamaiedge.net. 19 IN A 23.38.51.129

;; Query time: 1449 msec
;; SERVER: 2001:4860:4860::8888#53(2001:4860:4860::8888)
;; WHEN: Tue Apr 03 10:12:19 CEST 2018
;; MSG SIZE  rcvd: 228

MZ

On Tuesday, 24 October 2017 13:55:57 UTC+2, Alex Dupuy wrote:
Michal wrote:
Hm, are we certain this problem is on Alibaba's side? I just tested resolving www.aliexpress.com via OpenDNS' IPv6 servers (2620:0:ccc::2), and it works without issues - returns the same result as 8.8.8.8

Yes, this is Alibaba's problem. You can confirm this by sending queries with EDNS Client subnet data containing IPv6 addresses to their authoritative name servers.
<snip>

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