It looks like a lot of Brazilian IPv6 is offline, they are all over the bad list at
http://www.employees.org/~dwing/aaaa-stats/ipv6-failed.2014-01-17_0800.txt My own testing cbyrne@ubi:~$ wget www.uol.com.br --2014-01-18 17:39:15-- http://www.uol.com.br/ Resolving www.uol.com.br (www.uol.com.br)... 2804:49c:319:430::100, 200.221.2.45 Connecting to www.uol.com.br (www.uol.com.br)|2804:49c:319:430::100|:80... ^C cbyrne@ubi:~$ wget -6 www.uol.com.br -T 5 --2014-01-18 17:39:30-- http://www.uol.com.br/ Resolving www.uol.com.br (www.uol.com.br)... 2804:49c:319:430::100 Connecting to www.uol.com.br (www.uol.com.br)|2804:49c:319:430::100|:80... failed: Connection timed out. Retrying. --2014-01-18 17:39:36-- (try: 2) http://www.uol.com.br/ Connecting to www.uol.com.br (www.uol.com.br)|2804:49c:319:430::100|:80... failed: Connection timed out. Retrying. --2014-01-18 17:39:43-- (try: 3) http://www.uol.com.br/ Connecting to www.uol.com.br (www.uol.com.br)|2804:49c:319:430::100|:80... failed: Connection timed out. Retrying. ^C cbyrne@ubi:~$ traceroute6 www.uol.com.br traceroute to homeuol.ipv6uol.com.br (2804:49c:319:430::100) from 2001:5c0:1000:a::df, 30 hops max, 24 byte packets 1 2001:5c0:1000:a::de (2001:5c0:1000:a::de) 102.285 ms 103.219 ms 102.954 ms 2 ix-5-0-1.6bb1.MTT-Montreal.ipv6.as6453.net (2001:5a0:300::5) 100.013 ms 101.419 ms 98.764 ms 3 if-ge-11-3-0.0.tcore2.MTT-Montreal.ipv6.as6453.net(2001:5a0:1900:100::d) 174.996 ms 150.218 ms 125.806 ms 4 if-ae5.2.tcore2.NYY-NewYork.ipv6.as6453.net (2001:5a0:400:700::5) 106.977 ms 112.074 ms 109.283 ms 5 if-ae11.2.tcore1.NYY-NewYork.ipv6.as6453.net (2001:5a0:400:700::2) 107.136 ms 108.147 ms 107.042 ms 6 if-ae5.5.tcore1.NTO-NewYork.ipv6.as6453.net (2001:5a0:400:200::e) 106.494 ms 107.164 ms 108.047 ms 7 10gigabitethernet4.switch3.nyc4.he.net (2001:470:0:1a3::1) 117.914 ms 112.04 ms 111.513 ms 8 100ge7-2.core1.chi1.he.net (2001:470:0:298::1) 121.752 ms 129.8 ms * 9 equinix-V6-exchange-chi.merit.edu (2001:504:0:4::237:1) 184.18 ms 147.539 ms 123.464 ms 10 tenge0-0-0-0x76.aa2.mich.net (2001:48a8:48ff:ff01::2) 159.109 ms 127.228 ms 124.78 ms 11 * * * 12 * * * 13 * * * 14 * * * 15 *^C
