And just like that, the AAAA is back again. =) ============================================ DNS server: 167.142.225.5 ; <<>> DiG 9.7.3 <<>> AAAA www.facebook.com @167.142.225.5 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46006 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;www.facebook.com. IN AAAA ;; ANSWER SECTION: www.facebook.com. 452 IN CNAME star.c10r.facebook.com. star.c10r.facebook.com. 37 IN AAAA 2a03:2880:10:1f02:face:b00c:0:8 ;; AUTHORITY SECTION: c10r.facebook.com. 119251 IN NS b.ns.c10r.facebook.com. c10r.facebook.com. 119251 IN NS a.ns.c10r.facebook.com. ;; ADDITIONAL SECTION: a.ns.c10r.facebook.com. 120993 IN A 69.171.239.11 b.ns.c10r.facebook.com. 120381 IN A 69.171.255.11 ;; Query time: 7 msec ;; SERVER: 167.142.225.5#53(167.142.225.5) ;; WHEN: Sat Jun 8 18:12:42 2013 ;; MSG SIZE rcvd: 153 ============================================ Frank -----Original Message----- From: Frank Bulk [mailto:frnkblk@iname.com] Sent: Saturday, June 08, 2013 5:43 PM To: 'Doug Porter' Cc: nanog@nanog.org Subject: RE: Facebook broken over v6? Someone must have yanked the AAAA for www.facebook.com, because I see a CNAME to star.c10r.facebook.com, which doesn't have an AAAA. ============================================ DNS server: 199.120.69.24 ; <<>> DiG 9.7.3 <<>> AAAA www.facebook.com @199.120.69.24 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16032 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.facebook.com. IN AAAA ;; ANSWER SECTION: www.facebook.com. 3147 IN CNAME star.c10r.facebook.com. ;; AUTHORITY SECTION: c10r.facebook.com. 51 IN SOA a.ns.c10r.facebook.com. dns.facebook.com. 1370731022 300 600 600 300 ;; Query time: 0 msec ;; SERVER: 199.120.69.24#53(199.120.69.24) ;; WHEN: Sat Jun 8 17:41:30 2013 ;; MSG SIZE rcvd: 103 ============================================ DNS server: 167.142.225.5 ; <<>> DiG 9.7.3 <<>> AAAA www.facebook.com @167.142.225.5 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 963 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.facebook.com. IN AAAA ;; ANSWER SECTION: www.facebook.com. 2324 IN CNAME star.c10r.facebook.com. ;; AUTHORITY SECTION: c10r.facebook.com. 44 IN SOA a.ns.c10r.facebook.com. dns.facebook.com. 1370731022 300 600 600 300 ;; Query time: 8 msec ;; SERVER: 167.142.225.5#53(167.142.225.5) ;; WHEN: Sat Jun 8 17:41:30 2013 ;; MSG SIZE rcvd: 103 ============================================ Frank -----Original Message----- From: Doug Porter [mailto:dsp@fb.com] Sent: Saturday, June 08, 2013 3:30 PM Cc: nanog@nanog.org Subject: Re: Facebook broken over v6? We're actively investigating the v6 issues. We need more data though. If you're experiencing problems, please email me a tcpdump/pcap or any other debug data you think will help. Thanks, -- dsp