In case anyone has a contact at USA DOT FRA, their website is failing on IPv6
wget -6 https://www.fra.dot.gov/Page/P0001 converted 'https://www.fra.dot.gov/Page/P0001' (ANSI_X3.4-1968) -> ' https://www. fra.dot.gov/Page/P0001' (UTF-8) --2017-01-23 13:06:40-- https://www.fra.dot.gov/Page/P0001 Resolving www.fra.dot.gov (www.fra.dot.gov)... 2001:19e8:d:0:204:68:194:250 Connecting to www.fra.dot.gov (www.fra.dot.gov)|2001:19e8:d:0:204:68:194:250|:44 3... failed: No route to host. traceroute6 www.fra.dot.gov traceroute to www.fra.dot.gov (2001:19e8:d:0:204:68:194:250), 30 hops max, 80 by te packets 1 * * * 2 xe-0-1-0-17.r04.atlnga05.us.bb.gin.ntt.net (2001:418:0:5000::622) 1.870 ms 1.839 ms 1.864 ms 3 verio-gw.attga.ipv6.att.net (2001:1890:1fff:506:192:205:36:157) 1.238 ms 3.410 ms 3.415 ms 4 attga21crs.ipv6.att.net (2001:1890:ff:ffff:12:122:141:234) 20.824 ms 20.833 ms 20.818 ms 5 nsvtn22crs.ipv6.att.net (2001:1890:ff:ffff:12:122:2:6) 21.167 ms 21.153 ms 21.177 ms 6 cl2oh21crs.ipv6.att.net (2001:1890:ff:ffff:12:122:28:74) 24.830 ms 23.776 ms 23.276 ms 7 cgcil21crs.ipv6.att.net (2001:1890:ff:ffff:12:122:2:225) 23.844 ms 23.764 ms 22.193 ms 8 2001:1890:ff:ffff:12:122:120:179 (2001:1890:ff:ffff:12:122:120:179) 53.252 ms 26.166 ms 35.746 ms 9 2001:1890:c00:2407::113f:b38f (2001:1890:c00:2407::113f:b38f) 20.069 ms 20.192 ms 20.058 ms 10 * * * 11 * * * 12 * * *
