This affects all of the IPv6 addresses for us.archive.ubuntu.com as well (the addresses are mostly the same as security.ubuntu.com, excluding the two that actually work.)
It would be less of a concern if apt automatically fell back on the IPv4 stack, but right now the only way for my machines to receive updates is to manually disable IPv6. This is cumbersome--and in the case of security updates, potentially dangerous.
This affects all of the IPv6 addresses for us.archive. ubuntu. com as well (the addresses are mostly the same as security. ubuntu. com, excluding the two that actually work.)
It would be less of a concern if apt automatically fell back on the IPv4 stack, but right now the only way for my machines to receive updates is to manually disable IPv6. This is cumbersome--and in the case of security updates, potentially dangerous.