[dns-operations] R: Facebook DNS down in Europe?

[manu tman]

Thanks Bert and Constantinople,

Waking up to this :( . I will get people checking internally.
So this is only affecting v4 right? Do you have specific ISP ASN ? This
could help. Any traceroute may help too if you can provide any.
Tks
Manu

On Thu, Oct 19, 2017 at 7:23 AM Costantino Andrea (Con) <
andrea.costantino at h3g.it> wrote:

> South Europe (Italy) seems to work from ISP1, while ISP2 does not:
>
> (ISP1)
> [root at moni ~]# dig -4 star-mini.c10r.facebook.com @a.ns.c10r.facebook.com
> +tries=1
>
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6_9.4 <<>> -4
> star-mini.c10r.facebook.com @a.ns.c10r.facebook.com +tries=1
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47281
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4
> ;; WARNING: recursion requested but not available
>
> ;; QUESTION SECTION:
> ;star-mini.c10r.facebook.com.   IN      A
>
> ;; ANSWER SECTION:
> star-mini.c10r.facebook.com. 60 IN      A       31.13.86.36
>
> ;; AUTHORITY SECTION:
> c10r.facebook.com.      3600    IN      NS      a.ns.c10r.facebook.com.
> c10r.facebook.com.      3600    IN      NS      b.ns.c10r.facebook.com.
>
> ;; ADDITIONAL SECTION:
> a.ns.c10r.facebook.com. 3600    IN      AAAA
> 2a03:2880:fffe:b:face:b00c:0:99
> a.ns.c10r.facebook.com. 3600    IN      A       69.171.239.11
> b.ns.c10r.facebook.com. 3600    IN      AAAA
> 2a03:2880:ffff:b:face:b00c:0:99
> b.ns.c10r.facebook.com. 3600    IN      A       69.171.255.11
>
> ;; Query time: 43 msec
> ;; SERVER: 69.171.239.11#53(69.171.239.11)
> ;; WHEN: Thu Oct 19 16:13:29 2017
> ;; MSG SIZE  rcvd: 184
>
> (ISP2)
> [root at moni2 ~]# dig -4 star-mini.c10r.facebook.com @a.ns.c10r.facebook.com
> +tries=1
>
> ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6_9.4 <<>> -4
> star-mini.c10r.facebook.com @a.ns.c10r.facebook.com +tries=1
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
>
> -----Messaggio originale-----
> Da: dns-operations [mailto:dns-operations-bounces at dns-oarc.net] Per conto
> di bert hubert
> Inviato: giovedì 19 ottobre 2017 15:42
> A: dns-operations at dns-oarc.net
> Oggetto: [dns-operations] Facebook DNS down in Europe?
>
> Hi,
>
> Is anyone from Facebook here? We have huge issues resolving Facebook
> domains from some of our customers in The Netherlands and Belgium.
>
> From our own networks we note that some Facebook servers are indeed
> dropping queries over IPv4:
>
> $ dig -4 star-mini.c10r.facebook.com @a.ns.c10r.facebook.com +tries=1
>
> ; <<>> DiG 9.10.3-P4-Ubuntu <<>> -4 star-mini.c10r.facebook.com @
> a.ns.c10r.facebook.com +tries=1 ;; global options: +cmd ;; connection
> timed out; no servers could be reached
>
> We are tempted to deploy workarounds to serve old data.
>
> http://downdetector.com/status/facebook/map/ actually has a pretty map
> describing the problem right now.
>
> If anyone from Facebook wants us to try things, please let us know.
>
> Bert
> _______________________________________________
> dns-operations mailing list
> dns-operations at lists.dns-oarc.net
> https://lists.dns-oarc.net/mailman/listinfo/dns-operations
> dns-operations mailing list
> https://lists.dns-oarc.net/mailman/listinfo/dns-operations
>
> ________________________________
>
> CONFIDENTIAL: This E-mail and any attachment are confidential and may
> contain reserved information. If you are not one of the named recipients,
> please notify the sender immediately. Moreover, you should not disclose the
> contents to any other person, or should the information contained be used
> for any purpose or stored or copied in any form.
>
> _______________________________________________
> dns-operations mailing list
> dns-operations at lists.dns-oarc.net
> https://lists.dns-oarc.net/mailman/listinfo/dns-operations
> dns-operations mailing list
> https://lists.dns-oarc.net/mailman/listinfo/dns-operations
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.dns-oarc.net/pipermail/dns-operations/attachments/20171019/99236538/attachment.html>