[Bug 1580521] [NEW] wget does not support link-scoped IPv6 literal addresses

[Brian Candler]

Public bug reported:

Inside an lxd container with default profile you get this error with
wget:

root at first:~# wget http://nsrc.org/
Error parsing proxy URL http://[fe80::1%eth0]:13128: Invalid IPv6 numeric address.

root at first:~# echo $http_proxy
http://[fe80::1%eth0]:13128

The underlying issue is that wget does not support IPv6 literals of the
form [address%interface] as used by lxd(*). You can demonstrate this
without lxd:

$ wget http://[fe80::1%eth0]/
http://[fe80::1%eth0]/: Invalid IPv6 numeric address.

$ http_proxy=http://[fe80::1%eth0]:13128 wget http://nsrc.org/
Error parsing proxy URL http://[fe80::1%eth0]:13128: Invalid IPv6 numeric address.


(*)
=== /etc/default/lxd ===

# Run a minimal HTTP PROXY server
LXD_IPV6_PROXY="true"

=== /usr/lib/lxd/lxd-bridge ===

    [ "${HAS_IPV6}" = "true" ] && [ "${LXD_IPV6_PROXY}" = "true" ] && ip
addr add fe80::1/64 dev "${1}"

=== /usr/lib/lxd/profile-config ===

        if [ "${LXD_IPV6_PROXY}" = "true" ]; then
            lxc profile set default environment.http_proxy "http://[fe80::1%eth0]:13128" --force-local || true
        fi

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: wget 1.17.1-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Wed May 11 10:29:40 2016
InstallationDate: Installed on 2016-05-06 (4 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.3)
SourcePackage: wget
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: wget (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1580521

Title:
  wget does not support link-scoped IPv6 literal addresses

Status in wget package in Ubuntu:
  New

Bug description:
  Inside an lxd container with default profile you get this error with
  wget:

  root at first:~# wget http://nsrc.org/
  Error parsing proxy URL http://[fe80::1%eth0]:13128: Invalid IPv6 numeric address.

  root at first:~# echo $http_proxy
  http://[fe80::1%eth0]:13128

  The underlying issue is that wget does not support IPv6 literals of
  the form [address%interface] as used by lxd(*). You can demonstrate
  this without lxd:

  $ wget http://[fe80::1%eth0]/
  http://[fe80::1%eth0]/: Invalid IPv6 numeric address.

  $ http_proxy=http://[fe80::1%eth0]:13128 wget http://nsrc.org/
  Error parsing proxy URL http://[fe80::1%eth0]:13128: Invalid IPv6 numeric address.

  
  (*)
  === /etc/default/lxd ===

  # Run a minimal HTTP PROXY server
  LXD_IPV6_PROXY="true"

  === /usr/lib/lxd/lxd-bridge ===

      [ "${HAS_IPV6}" = "true" ] && [ "${LXD_IPV6_PROXY}" = "true" ] &&
  ip addr add fe80::1/64 dev "${1}"

  === /usr/lib/lxd/profile-config ===

          if [ "${LXD_IPV6_PROXY}" = "true" ]; then
              lxc profile set default environment.http_proxy "http://[fe80::1%eth0]:13128" --force-local || true
          fi

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: wget 1.17.1-1ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Wed May 11 10:29:40 2016
  InstallationDate: Installed on 2016-05-06 (4 days ago)
  InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.3)
  SourcePackage: wget
  UpgradeStatus: No upgrade log present (probably fresh install)

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