This bug was fixed in the package python-urllib3 - 1.13.1-2ubuntu0.16.04.1
--------------- python-urllib3 (1.13.1-2ubuntu0.16.04.1) xenial; urgency=medium
* d/p/06_revert_square_brackets_httplib.patch: Cherry pick revert of change to behaviour with httplib which breaks IPv6 square bracket handling (LP: #1578351).
-- James Page <email address hidden> Tue, 10 May 2016 10:00:32 +0100
This bug was fixed in the package python-urllib3 - 1.13.1- 2ubuntu0. 16.04.1
--------------- 2ubuntu0. 16.04.1) xenial; urgency=medium
python-urllib3 (1.13.1-
* d/p/06_ revert_ square_ brackets_ httplib. patch: Cherry pick revert of
change to behaviour with httplib which breaks IPv6 square bracket
handling (LP: #1578351).
-- James Page <email address hidden> Tue, 10 May 2016 10:00:32 +0100