[Bug 318878] Re: apt-get update stalls when accessing dualstacked ipv4 + ipv6 mirrors

[Torsten Spindler]

Does this problem still exist on newer Ubuntu releases?

** Changed in: apt (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/318878

Title:
  apt-get update stalls when accessing dualstacked ipv4 + ipv6 mirrors

Status in “apt” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: apt

  Description:    Ubuntu 8.04.2
  Release:        8.04
  Package: apt 0.7.9ubuntu17.1
  Mirror: gb.archive.ubuntu.com
  gb.archive.ubuntu.com has address 194.169.254.10
  gb.archive.ubuntu.com has IPv6 address 2a01:450:10:1::10

  
  Have an entry in /etc/network/interfaces defined as follows:

  #IPv6
  auto he6
  iface he6 inet6 v4tunnel
          address 2001:470:1f08:xxx::2
          netmask 64
          endpoint 216.66.xx.xx
          ttl 255
          #up ip link set mtu 1280 dev he6
          up ip route add default via 2001:470:1f08:xxx::1 dev he6

  When bringing up with 'ifup he6', or at boot time, the interfaces
  comes up successfully, and apt-get update will happy update from a
  mirror that has a dualstacked hostname (like gb.archive.ubuntu.com).
  If for any reason the he6 interface is taken down, when it is brought
  up again, apt-get update will timeout trying to access dual stacked
  hosts, while ping/ping6 to the host will work, as well as wget with or
  without any -4 or -6 switches.

  Update: problem is resolved after rebooting the system, but this isn't
  ideal; after reconfiguring eth0 a reboot isn't required to carry on
  using apt on ipv4...

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