[Bug 1775876] Re: wget cannot handle local-link IPv6 address

Thu Nov 28 07:33:29 UTC 2019

*** This bug is a duplicate of bug 1566930 ***
    https://bugs.launchpad.net/bugs/1566930

I confirm that the bug is still present on Ubuntu 18.04
$ cat /etc/issue
Ubuntu 18.04.3 LTS \n \l

$ wget --version
GNU Wget 1.19.4 built on linux-gnu.

see also https://bugs.launchpad.net/ubuntu/+source/wget/+bug/1566930

** This bug has been marked a duplicate of bug 1566930
   wget does not support IPv6 address with scoped zone (RFC 4007)

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https://bugs.launchpad.net/bugs/1775876

Title:
  wget cannot handle local-link IPv6 address

Status in wget package in Ubuntu:
  New

Bug description:
  GNU Wget 1.17.1 built on linux-gnu. (Ubuntu 16.04 amd64)

  IPv6 local link addresses (fe80::/10) are tricky. Network interface
  has to be specified to tell OS what interface to use. wget cannot
  handle that

  First, IPv6 address, no interface specified, it fails with an error
  (error comes from OS)

  user at test:~$ wget http://[fe80::87f4:81fa:b481:d781]/test.html
  --2018-06-08 17:29:08--  http://[fe80::87f4:81fa:b481:d781]/test.html
  Connecting to [fe80::87f4:81fa:b481:d781]:80... failed: Invalid argument.

  Second, IPv6 address with interface specified (%enp4s0 added to IPv6
  address), wget cannot handle this address format (and this bug report
  is about this case)

  user at test:~$ wget http://[fe80::87f4:81fa:b481:d781%enp4s0]/test.html
  http://[fe80::87f4:81fa:b481:d781%enp4s0]/test.html: Invalid IPv6 numeric address.

  Compared with CURL, that can do it

  First, IPv6 address without network interface, it fails with error
  from OS

  user at test:~$ curl http://[fe80::87f4:81fa:b481:d781]/test.html
  curl: (7) Couldn't connect to server

  Second, network interface is added and curl can handle it!

  user at test:~$ curl http://[fe80::87f4:81fa:b481:d781%enp4s0]/test.html
  <html><body>TEST</body></html>

  CURL and WGET were tested at the same PC...

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