Public bug reported: `old-releases.ubuntu.com` publishes a AAAA record in the DNS with a valid IPv6 address. This address, however, does not respond on HTTP. It does not respond on ICMPv6 either.
$ curl -v http://old-releases.ubuntu.com * Rebuilt URL to: http://old-releases.ubuntu.com/ * Trying 2001:67c:1360:8001::25... * TCP_NODELAY set ^C $ ping6 -c4 old-releases.ubuntu.com PING6(56=40+8+8 bytes) 2001:67c:1360:8001::25 --- old-releases.ubuntu.com ping6 statistics --- 4 packets transmitted, 0 packets received, 100.0% packet loss The issue is not on my side, I have tested this from several IPv6 networks with the same result. Other hosts from the same network (such as archive.ubuntu.com) work well via IPv6: $ ping6 -c4 archive.ubuntu.com PING6(56=40+8+8 bytes) 2001:67c:1360:8001::17 16 bytes from 2001:67c:1360:8001::17, icmp_seq=0 hlim=54 time=33.979 ms 16 bytes from 2001:67c:1360:8001::17, icmp_seq=1 hlim=54 time=33.798 ms 16 bytes from 2001:67c:1360:8001::17, icmp_seq=2 hlim=54 time=34.405 ms 16 bytes from 2001:67c:1360:8001::17, icmp_seq=3 hlim=54 time=33.246 ms --- archive.ubuntu.com ping6 statistics --- 4 packets transmitted, 4 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 33.246/33.857/34.405/0.416 ms $ curl -I -v http://archive.ubuntu.com * Rebuilt URL to: http://archive.ubuntu.com/ * Trying 2001:67c:1360:8001::21... * TCP_NODELAY set * Connected to archive.ubuntu.com (2001:67c:1360:8001::21) port 80 (#0) > HEAD / HTTP/1.1 > Host: archive.ubuntu.com > User-Agent: curl/7.54.0 > Accept: */* > < HTTP/1.1 200 OK HTTP/1.1 200 OK < Date: Wed, 31 Jul 2019 13:00:43 GMT Date: Wed, 31 Jul 2019 13:00:43 GMT < Server: Apache/2.4.18 (Ubuntu) Server: Apache/2.4.18 (Ubuntu) < Content-Type: text/html;charset=UTF-8 Content-Type: text/html;charset=UTF-8 < * Connection #0 to host archive.ubuntu.com left intact This issue makes `old-releases.ubuntu.com` unreachable from networks with IPv6-only (with or without NAT64/DNS64). ** Affects: ubumirror (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838526 Title: old-releases.ubuntu.com unreachable via IPv6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubumirror/+bug/1838526/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
