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Re: [public-dns-discuss] DNS64 Not Resolving Addresses



Erik,

I just opened a ticket with Comcast and hope it gets to the proper group.

If I log into the  Cisco network via VPN, the DNS64 server works. So, it has to be something inside the Comcast network.

Where did you see the outage you mentioned in the previous email?


Regards,

Jeffry J. Handal

On 6/16/18 6:06 AM, Erik Kline wrote:
Hmmm.  From Japan:

dig -t AAAA ipv4.google.com @2001:4860:4860::6464

; <<>> DiG 9.10.6 <<>> -t AAAA ipv4.google.com @2001:4860:4860::6464
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16110
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;ipv4.google.com. IN AAAA

;; ANSWER SECTION:
ipv4.google.com. 21599 IN CNAME ipv4.l.google.com.
ipv4.l.google.com. 299 IN AAAA 64:ff9b::acd9:188e

;; Query time: 48 msec
;; SERVER: 2001:4860:4860::6464#53(2001:4860:4860::6464)
;; WHEN: Sat Jun 16 19:58:12 JST 2018
;; MSG SIZE  rcvd: 93

"dig any cnn.com +trace +all @2001:4860:4860::6464" is also quite voluminous.

Are you still seeing an outage from your location? (whois suggests:

NetName:        HOUSTON-RPD-V6-2
NetHandle:      NET6-2601-2C0-1
Parent:         COMCAST6NET (NET6-2601-1)

but that's not necessarily authoritative)
On Sat, 16 Jun 2018 at 14:45, Jeffry Handal <jhandal11 AT gmail.com> wrote:
Erik and team,



The public DNS64 resolvers are pingable but do not resolve. The
following simple test is coming from an IPv6-only network that is behind
NAT64.

ping6 2001:4860:4860::6464
PING6(56=40+8+8 bytes) 2601:2c3:887f:5f73:11b7:5c86:b051:5c2c -->
2001:4860:4860::6464
16 bytes from 2001:4860:4860::6464, icmp_seq=0 hlim=42 time=133.313 ms
16 bytes from 2001:4860:4860::6464, icmp_seq=1 hlim=42 time=25.670 ms

ping6 2001:4860:4860::64
PING6(56=40+8+8 bytes) 2601:2c3:887f:5f73:11b7:5c86:b051:5c2c -->
2001:4860:4860::64
16 bytes from 2001:4860:4860::64, icmp_seq=0 hlim=44 time=635.711 ms
16 bytes from 2001:4860:4860::64, icmp_seq=3 hlim=44 time=1911.751 ms
16 bytes from 2001:4860:4860::64, icmp_seq=4 hlim=44 time=915.951 ms
16 bytes from 2001:4860:4860::64, icmp_seq=5 hlim=44 time=24.304 ms
16 bytes from 2001:4860:4860::64, icmp_seq=6 hlim=44 time=23.048 ms

ping6 google.com
ping6: getaddrinfo -- nodename nor servname provided, or not known


dig google.com @2001:4860:4860::6464


   nslookup
  > server 2001:4860:4860::6464
Default server: 2001:4860:4860::6464
Address: 2001:4860:4860::6464#53
  > google.com


   dig any cnn.com +trace +all

; <<>> DiG 9.8.3-P1 <<>> any cnn.com +trace +all
;; global options: +cmd
;; connection timed out; no servers could be reached


cat /etc/resolv.conf
#
# Mac OS X Notice
#
# This file is not used by the host name and address resolution
# or the DNS query routing mechanisms used by most processes on
# this Mac OS X system.
#
# This file is automatically generated.
#
nameserver 2001:4860:4860::6464
nameserver 2001:4860:4860::64



Thank you in advance for the guidance.



--
Jeffry J. Handal

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