[Bug 1566930] Re: wget does not support IPv6 address with scoped zone (RFC 4007)

[Adrian Schmutzler]

Maybe this is helpful for fixing:
On a router with LEDE-based OS, I have two different "versions" of wget:

With full wget 1.18, I cannot use an IPv6 address with interface as
described above.

However, with the wget included in BusyBox v1.25.1, the same command is
working!

Command (in both cases):
wget http://[fe80::someip%br-mesh]/dev/firmware/current/release.nfo -P /tmp

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https://bugs.launchpad.net/bugs/1566930

Title:
  wget does not support IPv6 address with scoped zone (RFC 4007)

Status in wget package in Ubuntu:
  Confirmed

Bug description:
  IMPACT: wget is not usable in the default configuration for LXD
  containers in Xenial

  Summary: A scoped zone address in the form [<address>%<interface] is
  not supported by wget.  The default network configuration of lxd in
  xenial containers is to use an http_proxy address that is a scoped
  IPv6 address 'http://[fe80::1%eth0]:13128'.

  $ lxc exec test -- wget http://www.google.com
  Error parsing proxy URL http://[fe80::1%eth0]:13128: Invalid IPv6 numeric address.

  Steps to recreate:
   - Install lxd 2.0.0~rc8-0ubuntu5
   - Launch a conatiner (lxc launch ubuntu-daily:xenial test)
   - lxc exec test -- wget 'http://www.google.com'

  These instructions use an LXD environment as an easy way to create a
  test environment with an IPv6 proxy using a scoped address.

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